Back to blog

Is Pumping Breastfeeding? Understanding Your Unique Journey

Posted on January 06, 2026

Is Pumping Breastfeeding? Understanding Your Unique Journey

Table of Contents

  1. Introduction
  2. Dispelling the Myth: Yes, Pumping Is Breastfeeding!
  3. The Incredible Benefits of Human Milk (However it's Delivered)
  4. Pumping vs. Direct Latch: Understanding the Nuances
  5. Why Pumping Becomes a Vital Tool in Your Journey
  6. Getting Started with Pumping: Practical Tips from Our IBCLCs
  7. Supporting Your Supply: Nutrition, Hydration, and Self-Care
  8. The Power of Support: You Don't Have to Do It Alone
  9. Medical Disclaimer
  10. FAQ
  11. Your Journey, Your Choice, Your Success!

Introduction

Perhaps you’re a new parent scrolling through social media, seeing endless images of babies at the breast, or freezers bursting with pumped milk. You might wonder, “Is pumping really breastfeeding?” Or maybe you're already on your feeding journey, balancing direct feeds with pumping sessions, and feeling a little unsure about where you fit in. We understand these feelings of uncertainty and the desire for clarity in a world overflowing with conflicting information. At Milky Mama, we believe that every parent deserves compassionate, empowering, and evidence-based support as they navigate their unique path.

The truth is, the world of infant feeding is incredibly diverse, and what works beautifully for one family might not be the right fit for another. Our goal with this comprehensive guide is to cut through the noise, validate your experiences, and provide you with the knowledge you need to make informed decisions for yourself and your baby. We'll explore the profound benefits of human milk, clarify the differences between direct feeding and pumping, and highlight why pumping is not just a valid but often essential part of the breastfeeding journey for countless families. By the end, you’ll not only have a clear answer to the question, "Is pumping breastfeeding?" but also feel empowered and supported in your personal feeding choices.

Dispelling the Myth: Yes, Pumping Is Breastfeeding!

Let’s get straight to the heart of the matter: If you are expressing human milk, whether directly from the breast or with a pump, and feeding it to your baby, you are breastfeeding. Pumping is simply another incredibly valuable and effective method of providing your baby with the unmatched nutrition and protective antibodies found in human milk.

For too long, there's been a misconception that "breastfeeding" only refers to direct feeding at the breast. This narrow definition often leaves parents who exclusively pump, or who combine pumping with direct feeding, feeling overlooked or as if their efforts are somehow less valid. We want to be abundantly clear: your method of milk delivery does not diminish the profound act of nourishing your child with human milk.

Whether your baby latches directly, or they receive your milk from a bottle after you’ve pumped it, the outcome is the same: your baby is benefiting from your incredible milk. Every drop counts, and your dedication to providing that nourishment, no matter how it’s delivered, is truly amazing. We recognize and celebrate every form of human milk feeding, understanding that each journey is personal and deserving of respect and support.

The Incredible Benefits of Human Milk (However it's Delivered)

Human milk is a living, dynamic substance, perfectly designed by nature to nourish and protect your baby. Breasts were literally created to feed human babies, and the milk they produce is truly remarkable. The method of delivery—whether directly from the breast or via a bottle filled with pumped milk—doesn't change the fundamental, powerful advantages your baby receives.

Here are just some of the reasons human milk is often referred to as "liquid gold":

  • Customized Nutrition: Human milk is a complex, ever-evolving food source that changes its composition to meet your baby's specific needs as they grow. It adapts from colostrum, the nutrient-dense first milk, to mature milk, changing throughout the day and even during a single feeding. While direct feeding offers a unique, immediate feedback loop between baby's saliva and your milk composition, pumped milk still provides a wide spectrum of these vital nutrients, fats, and carbohydrates essential for growth and development.
  • Immune System Boost: Human milk is packed with antibodies, immune cells, enzymes, and other protective factors that help shield your baby from infections and illnesses. These powerful components can reduce the risk of ear infections, respiratory illnesses, gastrointestinal issues, and allergies. This protective benefit is present whether your baby nurses directly or drinks pumped milk.
  • Cognitive Development: Studies suggest that human milk feeding is associated with improved cognitive development and higher IQ scores in children. The unique fatty acids (like DHA) found in human milk are crucial for brain development.
  • Reduced Health Risks for Baby: Feeding human milk is linked to a lower risk of sudden infant death syndrome (SIDS), childhood obesity, type 1 and type 2 diabetes, and certain childhood cancers.
  • Maternal Health Benefits: Beyond the baby, providing human milk offers significant health benefits for the parent too. It can help the uterus contract after birth, reducing postpartum bleeding, and is associated with a lower risk of certain cancers (like breast and ovarian cancer), type 2 diabetes, and heart disease.

No matter how your baby receives it, your human milk is a gift of health and love that extends far beyond simple nutrition. You're doing an amazing job by providing this incredible nourishment.

Pumping vs. Direct Latch: Understanding the Nuances

Both direct latching and pumping are powerful ways to deliver human milk, each with its own set of unique benefits and potential challenges. Many parents choose a combination of both, adapting their approach as their journey evolves. There's no single "right" way; the best approach is the one that allows you to meet your feeding goals sustainably and compassionately.

Direct Latch: The Body's Natural Dance

When a baby latches directly to the breast, it's a beautifully intricate process that goes beyond simple milk transfer.

Benefits of Direct Latch:

  • Customized Food for Baby: One of the most fascinating aspects of direct feeding is the immediate, biological feedback loop. When your baby’s saliva interacts with your nipple, it sends signals to your body, influencing the composition of your milk to specifically target any pathogens or needs your baby might have in that moment. It's truly personalized medicine!
  • Natural Feedback Loop for Supply: Milk production operates on a supply-and-demand basis. The more your baby nurses directly and effectively empties your breasts, the more milk your body is cued to produce. This natural feedback loop can be highly effective in establishing and maintaining a robust milk supply without the need for additional tools.
  • Convenience and Affordability: In the strictest sense, direct breastfeeding doesn't require any equipment or preparation. It's always ready, at the perfect temperature, and available anywhere. Fun fact: breastfeeding in public—covered or uncovered—is legal in all 50 states! While it requires significant energy and commitment from the lactating parent, it can offer substantial financial savings compared to formula feeding.
  • Easy Soothing and Comfort: Beyond hunger, nursing at the breast provides profound comfort and security for your baby. The act of suckling, the close skin-to-skin contact, and the warmth of your body can calm an anxious, scared, or fussy baby almost instantly. It helps foster a deep sense of security and connection.
  • Bonding Time: The skin-to-skin contact during nursing promotes the release of oxytocin, often called the "love hormone," in both parent and baby. This helps strengthen the emotional bond, aids in learning each other's cues, and promotes relaxation for both of you.

Challenges of Direct Latch:

  • Less Control Over Timing: Breastfed babies often feed on demand, which means feeding whenever they show hunger cues. This can make it challenging to establish a predictable schedule, especially in the early weeks, and may feel restrictive for the lactating parent.
  • Potential for Nipple Pain and Ailments: A poor latch can lead to sore, cracked, or even infected nipples, which can be incredibly painful and discouraging. Other challenges like mastitis or plugged ducts can also arise, though these can occur with pumping too.
  • Perceived Imbalance of Labor: When only one parent can directly feed the baby, it can sometimes lead to an imbalance in caregiving duties, especially during the frequent nighttime feedings. This can leave the lactating parent feeling exhausted and overwhelmed.

Pumping: Flexibility and Empowerment

Pumping offers a powerful alternative or complement to direct feeding, opening up possibilities for many families to provide human milk when direct latching isn't feasible or desired.

Benefits of Pumping:

  • Control Over Timing and Schedule: Pumping allows you to express milk on a schedule that works for you, independent of your baby’s immediate hunger cues. This flexibility can be crucial for returning to work or school, attending appointments, or simply carving out personal time.
  • Ability to Share Feedings: One of the greatest advantages of pumping is that it enables other caregivers—partners, grandparents, or daycare providers—to feed the baby with human milk. This can promote a more equitable balance of childcare duties, allowing the lactating parent to rest, recover, or engage in other activities.
  • Addressing Supply Issues: Pumping is an excellent tool for managing and increasing milk supply. If your baby isn't effectively removing milk or you want to boost your production, adding pumping sessions after or between feeds can signal your body to make more milk. It’s also invaluable for building a freezer stash.
  • More Breaks and Freedom: Having a store of pumped milk gives caregivers the freedom to take a much-needed break, enjoy a date night, or even travel, knowing their baby will still receive human milk. It allows for flexibility in fitting milk expression into your daily routine.
  • Support for Donor Milk and Special Circumstances: For babies who cannot feed directly at the breast due to prematurity, illness, or other challenges, pumped milk is often their lifeline. Similarly, for adopted babies or those whose parents cannot produce enough milk, donor human milk (which is typically pumped) provides a life-saving alternative to formula.
  • Addressing Latch Difficulties: Pumping can help evert flat or inverted nipples, making it easier for a baby to latch. It can also help relieve engorgement before a feed or manage a forceful letdown by removing some milk first.

Challenges of Pumping:

  • Equipment Expense and Maintenance: Pumping requires an initial investment in equipment, including a breast pump, bottles, storage bags, and often accessories like a hands-free bra and extra flanges. There's also the time commitment for cleaning and sanitizing pump parts. We offer a range of effective and supportive lactation supplements and delicious lactation treats to help support your supply, which can be a valuable part of your pumping routine.
  • Less Direct Immune System Feedback: While pumped milk is still incredibly rich in immune factors, it doesn't have the same immediate, dynamic, and personalized feedback loop that occurs when a baby nurses directly at the breast and their saliva interacts with the milk ducts. However, the overall immune benefits of pumped human milk far outweigh formula.
  • Privacy and Convenience Concerns: Pumping can feel less discreet than direct feeding in public settings, and transporting pump equipment, finding private spaces, and adhering to a pumping schedule while away from home can be inconvenient for some.
  • Storage Management: Building and managing a significant freezer stash requires organization and space. Keeping track of dates and ensuring proper storage and rotation of milk can be a logistical challenge.

Ultimately, the choice to pump, nurse, or do both is a deeply personal one. We are here to support you in whatever path you choose, offering resources and products to make your journey smoother and more successful.

Why Pumping Becomes a Vital Tool in Your Journey

For many parents, pumping isn't just an option; it's a necessity that enables them to provide human milk under various circumstances. It's a powerful tool that bridges gaps, addresses challenges, and supports diverse family structures and lifestyles.

When Direct Latch Isn't Possible or Sufficient

Life with a newborn doesn't always go as planned, and sometimes direct breastfeeding encounters obstacles that make pumping essential.

  • Baby Unable to Effectively Breastfeed: This is one of the most common reasons parents turn to pumping. If your baby is born prematurely, has a medical condition, experiences a traumatic birth, or has difficulty with latching due to oral ties or other issues, they may not be able to effectively remove milk from the breast. In these critical situations, pumping becomes the primary way to establish and maintain your milk supply until your baby is strong enough or able to latch. Every missed feed at the breast should ideally be replaced with a pumping session to signal your body to continue producing milk.
  • Baby is Not Getting Enough Breast Milk: If your baby isn't gaining weight appropriately, your pediatrician or lactation consultant may recommend supplementing. Pumping after nursing sessions, often called "power pumping" or "pump for an increase," can help increase your supply by signaling a higher demand. This "emptying the breast" strategy can be a game-changer for many who are concerned about low supply. Our virtual lactation consultations can provide personalized strategies for increasing supply.
  • Nipple Challenges (Inverted or Flat Nipples): Some parents have nipples that are naturally flat or inverted, which can make it very challenging for a newborn to latch effectively. Pumping for a few minutes before putting the baby to the breast can help draw out and evert the nipple, making it easier for your baby to grasp and sustain a deep latch.
  • Forceful Letdown: While a strong milk flow might seem like a good thing, some babies struggle with a very forceful or overactive letdown, leading to choking, gagging, or discomfort at the breast. Pumping just enough to trigger the initial letdown and release some of that powerful flow can help moderate it, making nursing a more comfortable experience for your baby.

Supporting Maternal Well-being and Lifestyle

Pumping isn't just for overcoming challenges; it's also a powerful tool for integrating human milk feeding into a busy, modern life, supporting the lactating parent's overall well-being.

  • Returning to Work or School: For many parents, returning to employment or education is a reality. Pumping allows you to continue providing human milk to your baby while you're away. It's important to remember that laws exist in all 50 states that provide protections and accommodations for lactating parents in the workplace, including time and a private space to express milk. Planning ahead by building a small freezer stash and practicing with your pump can ease this transition. Our online breastfeeding classes include valuable information on pumping strategies for working parents.
  • Separation from Baby (Travel, Appointments, Self-Care): Whether it's a doctor's appointment, a well-deserved date night, or even a short trip, pumping ensures your baby has access to your milk even when you can't be there to feed them directly. This flexibility is vital for parental mental health and allows for essential breaks.
  • Exclusive Pumping as a Choice: Some parents make the personal decision to exclusively pump for various reasons—it might be more comfortable, offer more control, or simply align better with their lifestyle or past experiences. This is a completely valid and recognized form of human milk feeding, allowing parents to meet health recommendations for providing human milk without direct latching. You're doing an amazing job.
  • Engorgement Relief: In the early days, or if there's a missed feeding, breasts can become painfully engorged. Pumping or hand expressing just enough milk to relieve pressure and discomfort can prevent complications like plugged ducts or mastitis. It's important not to over-pump during engorgement, as this can signal your body to produce even more milk.
  • Building a Milk Stash: A freezer stash can provide peace of mind, offering a buffer for unexpected absences, emergencies, or simply ensuring your baby has enough milk if your supply temporarily dips. Pumping after or between nursing sessions can help you gradually build this reserve without overstimulating your supply long-term.
  • Milk Donation: For parents who find they have an abundant supply, pumping extra milk to donate to a human milk bank is an incredibly altruistic act. Donated human milk is a lifeline for many fragile babies, especially those in NICUs.

No matter your reason for pumping, remember that you are providing a precious gift. We understand the effort and dedication it takes, and we're here to support you with products and education every step of the way.

Getting Started with Pumping: Practical Tips from Our IBCLCs

Navigating the world of breast pumps and milk expression can feel like learning a new language. But with a few practical tips, you can feel confident and effective in your pumping journey. Our IBCLCs at Milky Mama want to share some insights to help you get the pump party started!

When to Start Pumping

If your baby is healthy and latching well, it’s often recommended to wait until your milk supply is well-established, typically around 4-6 weeks postpartum, before introducing regular pumping. This allows your body and baby to regulate supply naturally through direct nursing. However, there are exceptions:

  • If your baby is in the NICU or unable to latch effectively: Start pumping as soon as possible after birth (ideally within 6 hours) to establish your supply. Aim to pump 8-10 times in 24 hours, including at least one session overnight, to mimic a newborn’s feeding frequency.
  • If you're returning to work soon: Begin practicing pumping a few weeks before your return. This gives you time to get comfortable with your pump, find the right settings, and build a small freezer stash for peace of mind. It also gives your baby time to get used to bottle feeding.

How Often to Pump and for How Long

The frequency and duration of your pumping sessions will depend on your specific goals:

  • Exclusively Pumping: If you are exclusively pumping, aim to pump as often as your baby would typically feed, usually 8-10 times in 24 hours for the first few months. This "demand" helps maintain your supply. Each session should last 15-20 minutes, or until your breasts feel empty. Double pumping (pumping both breasts simultaneously) is more efficient and often yields more milk.
  • Pumping to Build a Stash or Increase Supply: Try adding one or two pumping sessions per day after a nursing session or between feeds. These "extra" sessions signal your body to make more milk without interfering with your baby's direct feeds.
  • Pumping While Away from Baby: If you're separated from your baby (e.g., at work), try to pump at the times you would normally nurse, typically every 2-4 hours. Consistency is key to maintaining your supply.

Remember, finding the right pump setting should feel comfortable, never painful. If you experience discomfort, adjust the suction or consult with a lactation consultant.

Power Pumping: A Tool for Boosting Supply

Power pumping mimics the cluster feeding patterns of babies, which are designed to increase milk supply. It’s a short-term strategy to boost production, not a long-term practice.

A common power pumping schedule is to dedicate one hour, once a day:

  • Pump for 20 minutes.
  • Rest for 10 minutes.
  • Pump for 10 minutes.
  • Rest for 10 minutes.
  • Pump for 10 minutes.

It might take a few days to see a difference, and you may not collect much milk during the "rest" pumps, but the frequent stimulation is what tells your body to make more. Don't stare at the bottles during these sessions; sometimes a simple distraction can help ease the mental load!

Flange Fit: Your Nipple's Perfect Match

Using the correct flange size (also called a breast shield) is absolutely critical for comfortable and effective pumping. An ill-fitting flange can cause pain, damage your nipples, lead to clogged ducts, and significantly reduce milk output.

Your nipple should move freely in the center of the flange tunnel without rubbing against the sides. Very little or no areola should be pulled into the tunnel. Nipple size can change over time and may even differ between breasts. If you suspect an incorrect fit, we highly recommend scheduling a virtual lactation consultation to get personalized guidance.

Pumping Hygiene: Keeping Things Clean

Keeping your pump parts clean is essential for your baby's health. Always wash your hands before handling pump parts and breast milk. After each pumping session, disassemble your pump parts and wash them with soap and warm water, then rinse thoroughly. You can air dry them on a clean paper towel or drying rack. Some parents sanitize parts daily, especially for newborns or premature babies, by boiling, steaming, or using a dishwasher's sanitizing cycle.

Building a Stash: How Much is Enough?

Many new parents worry about building a huge freezer stash, but a massive supply isn't always necessary. If you're returning to work, having enough for a few days' worth of feeds (approximately 1-1.5 ounces per hour your baby is away from you) is usually sufficient. Remember, breast milk consumption typically stabilizes around 1-1.5 ounces per hour of separation for babies under 6 months.

When bottle-feeding pumped milk, consider using "pace feeding" methods. This mimics the flow of direct breastfeeding, allows the baby to control the pace, and can prevent them from overeating, which helps ensure your supply keeps up with their true demand.

Embracing Hand Expression

Don't underestimate the power of your own hands! Learning how to hand express milk is a valuable skill for any lactating parent. It can be incredibly helpful for:

  • Relieving engorgement or fullness.
  • Collecting colostrum in the early days.
  • Clearing plugged ducts.
  • Increasing milk output after a pumping session.
  • If you're unexpectedly separated from your pump or baby.

Hand expression takes practice, but it's a convenient, cost-free method of milk removal that every parent should know.

Supporting Your Supply: Nutrition, Hydration, and Self-Care

Whether you're nursing directly, exclusively pumping, or doing a combination, supporting your body is paramount to a successful human milk feeding journey. Your well-being matters, and we at Milky Mama are dedicated to helping you thrive.

Importance of Balanced Diet and Fluids

Producing human milk requires energy and nutrients. While your body prioritizes milk production, maintaining a balanced diet rich in whole foods, lean proteins, healthy fats, fruits, and vegetables is crucial for your overall health. Equally important is staying well-hydrated. Many parents find they feel thirstier when lactating, so keep water or other hydrating drinks readily available. Our lactation drinks like Pumpin Punch™, Milky Melon™, and Lactation LeMOOnade™ are designed to offer both hydration and lactation support in one delicious package.

Rest and Stress Management

Sleep deprivation and stress are common challenges for new parents, and they can impact milk supply. While getting uninterrupted sleep with a newborn can feel impossible, prioritizing rest whenever possible (even short naps!) and finding healthy ways to manage stress are vital. Lean on your support system, ask for help, and remember that it's okay not to be perfect.

Milky Mama's Role in Supporting Supply and Well-being

We understand that sometimes, despite your best efforts with diet, hydration, and rest, you might feel like your supply needs an extra boost. That's where Milky Mama's carefully crafted products come in. We offer a range of delicious and effective options designed to support your lactation journey:

Medical Disclaimer: Please remember that this product is not intended to diagnose, treat, cure, or prevent any disease. Always consult with your healthcare provider or a lactation consultant for medical advice regarding your personal health and lactation journey before starting any new supplements.

We believe in nourishing both body and soul, because a happy, well-supported parent is better equipped to care for their baby.

The Power of Support: You Don't Have to Do It Alone

Regardless of how you choose to feed your baby, having a strong support system is invaluable. The human milk feeding journey, whether it involves nursing, pumping, or both, is demanding, and you deserve all the help and encouragement you can get.

Partner and Family Involvement

One of the beautiful aspects of pumping is the opportunity it creates for partners and other family members to actively participate in feeding the baby. Whether it's taking on a nighttime bottle feed, washing pump parts, or simply offering emotional encouragement, a supportive partner can significantly lighten your load and strengthen family bonds. Open communication about your needs and feelings can make all the difference.

Workplace Rights and Considerations

For working parents, understanding your rights is crucial. Federal laws in the United States, such as the PUMP Act, require employers to provide reasonable break time and a private, non-bathroom space for employees to express breast milk during the workday for up to one year after the child’s birth. Knowing these protections empowers you to advocate for yourself and ensure a successful return to work while continuing to provide human milk.

The Indispensable Role of an IBCLC

Sometimes, despite all your efforts and research, you might encounter challenges that require expert guidance. This is where an International Board Certified Lactation Consultant (IBCLC) becomes your greatest ally. IBCLCs are healthcare professionals specializing in the clinical management of human milk feeding. They can provide personalized support for:

  • Latch and positioning issues.
  • Low milk supply concerns.
  • Nipple pain and damage.
  • Pumping techniques and flange fitting.
  • Managing engorgement, plugged ducts, and mastitis.
  • Navigating milk feeding with special needs babies.
  • Creating a pumping plan for returning to work.

At Milky Mama, we offer accessible virtual lactation consultations and comprehensive online breastfeeding classes to connect you with the expert support you need, right from the comfort of your home. Our Breastfeeding 101 class is a fantastic starting point for understanding the fundamentals.

Community Support

Connecting with other parents who are on similar journeys can provide immense comfort and practical advice. Sharing experiences, celebrating successes, and commiserating over challenges can make you feel less alone. We invite you to join The Official Milky Mama Lactation Support Group on Facebook and follow us on Instagram for a vibrant community, daily tips, and a space where you feel seen and heard. Remember, representation matters, especially for Black breastfeeding moms, and our community embraces all families.

Medical Disclaimer

The information provided in this blog post is for educational purposes only and is not intended as medical advice. It is essential to consult with your healthcare provider, pediatrician, or an International Board Certified Lactation Consultant (IBCLC) for any medical concerns, diagnoses, or treatment options related to your health or your baby's feeding. Always seek professional medical advice for individual health conditions.

FAQ

Q1: Is breast milk from pumping as beneficial as direct breastfeeding? A: Yes, human milk, whether expressed by pumping or directly from the breast, provides immense nutritional and immunological benefits to your baby. While direct latching offers a unique, dynamic feedback loop that can tailor milk composition in real-time, pumped milk still contains all the essential antibodies, nutrients, and immune factors that are crucial for your baby's growth and protection. Every drop counts.

Q2: How do I know if I'm pumping enough milk? A: The "right" amount of milk to pump varies. For an exclusively pumped baby, they typically consume 25-30 ounces per day after the first few weeks. If you're pumping while away from your baby, aim for 1-1.5 ounces per hour of separation. Look for signs that your baby is well-fed, such as adequate wet and dirty diapers, and healthy weight gain. If you're concerned about your output, consulting with an IBCLC can provide personalized guidance.

Q3: Can I combine direct breastfeeding and pumping? A: Absolutely! Many parents successfully combine direct breastfeeding with pumping. This approach offers the best of both worlds, providing the unique bonding and convenience of direct nursing while also allowing for flexibility, shared feedings, and supply management through pumping. Finding the right balance that works for you and your baby is key.

Q4: What if I have trouble increasing my milk supply, even with pumping? A: It's common to face challenges with milk supply, and you're not alone. The first step is to ensure frequent and effective milk removal, either through nursing or pumping. If you're already doing that, consider consulting an IBCLC for a thorough assessment of your technique and to rule out underlying issues. Additionally, incorporating lactation-supporting foods, drinks, or our specialized herbal lactation supplements and lactation treats into your routine may help. Remember, consistency and proper technique are essential for signaling your body to produce more milk.

Your Journey, Your Choice, Your Success!

At Milky Mama, we wholeheartedly affirm that if you are pumping and providing your baby with human milk, you are breastfeeding. Your dedication, effort, and love are evident in every drop, and you are doing an amazing job. The path you choose—whether it's direct nursing, exclusive pumping, or a combination—is valid, powerful, and deeply personal. There’s no judgment here, only unwavering support and empowering education.

We are honored to be a part of your unique human milk feeding journey, offering nourishing lactation products and expert lactation support every step of the way. If you have questions, need guidance, or just want to connect with a supportive community, we encourage you to explore our resources.

Ready to nourish your body and boost your journey?

You’ve got this, mama. We are here for you.

Share on:

Bestsellers