MEDELA Nipple Shield Available in 16mm, 20mm and 24mm Sizes

30 In stock

Medela Nipple Shields can be an effective tool for professionals and moms to manage infants with latch-on problems, for moms with overactive let-downs or for flat, inverted and sore nipples. Medela Nipple Shields enable continued breastfeeding without interruption until these problems are resolved. MEDELA Nipple Shield Features and Benefits: For latch-on...
Size :
16mm (Extra Small)
20 mm (Small)
24 mm (Medium)

Medela Nipple Shields can be an effective tool for professionals and moms to manage infants with latch-on problems, for moms with overactive let-downs or for flat, inverted and sore nipples. Medela Nipple Shields enable continued breastfeeding without interruption until these problems are resolved.

MEDELA Nipple Shield Features and Benefits:

  • For latch-on difficulties or flat/inverted nipples: To help moms continue breastfeeding
  • Available in different sizes: Consult a lactation professional for assistance
  • Sterile versions available for hospitals: For immediate use in the hospital
  • Made without BPA: All parts that come into contact with breast milk are not made with BPA

Breast Shield Sizing: How to Get the Best Fit

It’s not just a matter of comfort – using the correct size breast shield while pumping is important for efficiency, too. Your end goal of pumping for your little one is to get as much out of your sessions as possible, and a breast shield that’s too large or too small can greatly impact the amount of milk you’re able to pump. Even if you’re a pro and have been pumping for a while, keep in mind that your breast shield sizing can change during your breastfeeding journey – and your pumping routine might benefit from a reevaluation and resizing. You might even find that each breast needs a different shield size. Remember, pumping shouldn’t hurt! The following information will help you choose the right size breast shield for your needs.

Understanding Medela Breast Shield Sizes

  • The starting point for choosing the correct breast shield is to determine your optimal size based on your nipple diameter.
  •  Using a ruler or measuring tape, measure the diameter (or distance straight across the middle) of your nipple at the  base, in millimeters. Do not include your areola. (Tip: Not in a “math” mood? 1 cm = 10 mm)
Medela Breast Shield Guide

Pick out the right size for you.

Medela Breast Shield Size and Diameter Guide

If your nipple measures 16 mm in diameter, your recommended breast shield size is 21 mm because the 21 mm shield fits nipples up to 17 mm in diameter. If your nipple diameter measures 24 mm, your recommended size would be 30 mm.Note that our PersonalFit Flex™ breast shields are available in four sizes – 21mm, 24mm, 27mm, and 30mm. We offer a 36mm size in PersonalFit only, not PersonalFit Flex.

Pick out the right size for you.

Test Your Breast Shield Sizing:

Since your breast shield size is also dependent on breast tissue and skin elasticity, it’s important to confirm you’ve chosen the correct size. Here’s how to check:  
  • Using the 24mm breast shields included with your pump (or the size chosen after measuring your nipples), center your nipple and gently hold the breast shield against your breast. (Note: pressing breast shields too hard against your breasts when pumping can block your milk ducts.)
  •  Adjust your breast pump’s vacuum for Maximum Comfort Vacuum™ to achieve optimum suction level, turning the vacuum up until slightly uncomfortable and then down one notch.
  • When your breast shield fits correctly, your nipple will be centered in the breast shield tunnel and will move freely during pumping. Refer to the images below while pumping:
Medela Breast Shield Nipple Size Guide


Determining if You Need a New Size Breast Shield:

You will need to reevaluate your breast shield size if you find that one or more of the following are happening while you’re pumping:
  • Your nipple is rubbing the sides of the breast shield tunnel to the point of causing discomfort.
  • You see excessive areola being pulled into the breast shield tunnel.
  • You have redness on or at the base of the nipple during and/or after pumping.
  • Your nipples or areola are turning white during and/or after pumping.
  • Your breasts still feel full after pumping.


How do I sanitize the nipple shield?


1. Rinse in cool water to remove breast milk.
2. Wash in warm, soapy water.
3. Rinse with clear water.
Note: Nipple shields can also be washed on top rack of dishwasher.

Drying and Storing
Allow nipple shield to air dry in a clean area and store dry with the nipple facing upwards. Do NOT store wet or damp parts.
In addition to washing, you may sanitize your nipple shield once per day by following the instructions on Medela’s Quick Clean™ Micro-Steam™ bag or boiling.
If boiling your nipple shield:
  1. Choose a pot that is large enough so the nipple shield DOES NOT rest on the sides or bottom while boiling.
  2. Fill the pot with water and bring to a boil.
  3. Carefully drop nipple shield into boiling water, and boil for 10 minutes.
  4. Gently remove from water with tongs and place on a clean surface with nipple facing upwards. (For easier removal, add cool water to pot to prevent splashing.)
  5. See Drying and Storing section above for further instructions.

Shipping Policy

Thank you for visiting and shopping at Following are the terms and conditions that constitute our Shipping Policy.

Domestic Shipping Policy Shipment processing time

All orders are processed within 24-48 hours. Orders are not shipped or delivered on weekends or holidays they will be shipped the next business day.

If we are experiencing a high volume of orders, shipments may be delayed by a few days. Please allow additional days in transit for delivery. If there will be a significant delay in shipment of your order, we will contact you via email or telephone.

Shipping rates and delivery estimates

Shipping charges for your order will be calculated and displayed at checkout. * Overnight delivery is only available for orders with delivery addresses within the continental United States.

Delivery delays can occasionally occur.

We currently support, UPS, USPS and FedEx within United States

Shipment to P.O. boxes or APO/FPO addresses ships to addresses within the U.S., U.S. Territories, and APO/FPO/DPO addresses.

Currently we do ship to P.O. boxes and APO/FPO addresses, please allow a phone call confirmation before we fulfill the order. Shipment confirmation &

Order tracking

You will receive an order confirmation followed by Shipment Confirmation email once your order has shipped containing your tracking number(s). The tracking number will be active within 24 hours.

Customs, Duties and Taxes is not responsible for any customs and taxes applied to your order. All fees imposed during or after shipping are the responsibility of the customer (tariffs, taxes, etc.).

Damages is not liable for any products damaged or lost during shipping. If you received your order damaged, please contact the shipping carrier to file a claim.

Please save all packaging materials and damaged goods before filing a claim. International Shipping Policy.

We currently do not ship countries/destinations outside the U.S.

We are working hard to soon start the worldwide Shipping.


All returns are subject to a 15% restocking fee. Our policy lasts up to 30 days. If 30 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange.

To be eligible for a return, your item must be unused, unopened and in the same condition that you received it. It must also be in the original packaging.

Several types of goods are exempt from being returned. Perishable goods such as food, flowers, newspapers or magazines cannot be returned. We also do not accept products that are intimate or sanitary goods, hazardous materials, or flammable liquids or gases.

Additional non-returnable items:

Gift cards Downloadable software products Some health and personal care items To complete your return, we require a receipt or proof of purchase.

Please do not send your purchase back to the manufacturer.

There are certain situations where only partial refunds are granted (if applicable) Book with obvious signs of use CD, DVD, VHS tape, software, video game, cassette tape, or vinyl record that has been opened. Any item not in its original condition, is damaged or missing parts for reasons not due to our error Any item that is returned more than 30 days after delivery

Refunds (if applicable) Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund. If you are approved, then your refund will be processed and a credit will automatically be applied to your credit card or original method of payment within a certain amount of days.

Late or missing refunds (if applicable) If you haven’t received a refund yet, first check your bank account again. Then contact your credit card company, it may take some time before your refund is officially posted. Next contact your bank. There is often some processing time between 30-90 days before a refund is posted. If you’ve done all of this and you still have not received your refund yet, please contact us at

Sale items (if applicable) Only regular priced items may be refunded, unfortunately sale items cannot be refunded.

Exchanges (if applicable) We only replace items if they are defective or damaged. If you need to exchange it for the same item, send us an email at

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