Nipple Shields 101: How to Choose the Right Size and Use Them Comfortably

Quick Answer

To choose the right nipple shield size, measure the diameter of your nipple at its base. Most moms need a 24mm shield, but sizes range from 17mm to 27mm. If you're unsure, start with 24mm and adjust based on fit. For comfort, ensure the shield fits snugly without pinching, and use a thin layer of nipple cream if needed.

Nipple shields can be a lifesaver for breastfeeding moms, whether you're dealing with latch issues, flat or inverted nipples, or soreness. But finding the right size and using it correctly is key to making them work for you. This guide breaks down nipple shield sizing, how to use them comfortably, and what to look for in a quality shield.

With so many options on the market, it's easy to feel overwhelmed. We'll help you understand the basics, share practical tips, and highlight a few products that can make your pumping and nursing journey smoother.

How to Measure for the Right Nipple Shield Size

Getting the right size is crucial for both comfort and effectiveness. Here's a simple way to measure at home: Before feeding, use a ruler or a measuring tape to measure the diameter of your nipple at its base, excluding the areola. This number in millimeters is your starting size. Most nipples fall between 17mm and 27mm, with 24mm being the most common.

If you're between sizes, consider going up a size for better comfort, especially if your nipple swells during a letdown. A shield that's too small can cause pain and reduce milk flow; one that's too large can slip and make it hard for your baby to latch. When in doubt, consult a lactation consultant.

• Measure before a feeding when your nipple is most typical.
• Check the fit during a feeding—your nipple should move freely but not rub painfully.
• Re-measure after a few weeks; your size can change as you and your baby get used to nursing.

Nipple Shield Sizing Guide: 17mm, 24mm, and 27mm

Shields come in a range of sizes, and it's important to choose one that matches the base diameter of your nipple. A 17mm shield is typically for smaller nipples, while 24mm is the standard size that fits most moms. The 27mm size is for larger nipples or those who need a bit more room.

Remember, a shield that's too small can compress your nipple, leading to soreness and reduced milk transfer. A shield that's too large may not stay in place or could cause your baby to take in more air. Pay attention to how it feels and how well your baby latches—those are your best indicators for the right fit.

• Start with a 24mm shield if you're between sizes.
• Consider a 17mm if your nipple measures less than 20mm.
• Choose 27mm if your nipple is larger than 25mm or if you have very elastic tissue.

How to Use Nipple Shields Comfortably

Nipple shields are designed to protect tender nipples while still allowing your baby to nurse effectively. To use one, moisten the shield with warm water or milk to help it stick to your breast. Center the shield over your nipple, ensuring the opening is around the base. Then, let your baby latch naturally.

For comfort, make sure the shield is snug but not tight. If you feel any pinching, that's a sign to adjust the size or position. Some moms find that using a thin layer of lanolin or coconut oil on their nipple helps the shield glide on more smoothly. Clean the shield after each use to prevent bacterial growth.

• Always sterilize before first use and after each feeding.
• Use a doctor- or lactation-consultant-approved technique to avoid nipple confusion.
• If you feel pain or notice a poor latch, re-check the size and fit.

What to Look for in Quality Nipple Shields

Quality matters when it comes to materials and design. Look for shields made of food-grade silicone that are soft, flexible, and have a texture that feels comfortable against your skin. The shield should be free from sharp edges and easy to clean. A carrying case is a handy addition for keeping shields sanitary when you're out and about.

Nipple shields are not a one-size-fits-all solution. Some mommas find that they need shields for just a few weeks to get through an initial latch issue, while others use them longer. Be patient and flexible—what works for someone else might not work for you.

• Choose a shield with a design that is easy to flip inside out for cleaning.
• Look for a shield that is compatible with pump flanges if you plan to pump with them.
• Exceptionally soft silicone often feels more natural for your baby.

Decision Rules: Choosing Your Nipple Shield

• Measure at the base: Use a flexible measuring tape or ruler to get the diameter in millimeters. Do this before a feeding for the most accurate baseline. This number is your starting size—round up if you're between sizes.
• Check the fit during feeding: Your nipple should glide comfortably inside the shield without rubbing the sides or slipping out. Pain or a blackened appearance means you need a different size or position. Comfort is non-negotiable—adjust as needed.
• Match shield size to your nipple base: If your nipple base is about 20mm or less, a 17mm shield may work; 24mm suits most moms; choose 27mm for larger or more elastic nipples. The right size optimizes milk flow and baby's latch.

Relevant Products for Comfortable Nursing

• Shield Maiden Nipple Shields: Made of laboratory-tested, food-grade silicone that has a velvety skin-texture on the side used by your nursing baby, and is smooth on mama’s side so it adheres well. They are colorful at room temperature so they can be easily found, and neutral at body temperature for a more natural experience. Includes (2) Nipple Shields and a carrying case or (3) shields with one of each size for the... The velvety side feels natural for your baby, and the smooth side adheres well to your skin, reducing slippage. The color-changing feature makes them easy to spot when you’re fumbling in a diaper bag, and the carrying case keeps them clean on the go.
• Pumping Accessory Pouch- BeMyBreastFriend: These epic Accessory Pouches from Bemybreastfriend can hold your pump parts, Chiller parts, or anything you need to store while out and about! Each pouch features an awesome 'hidden objects photo' with hidden flanges, duckbills and more. Made from a durable, coated woven fabric. Measures 11" W x 13" H. Top zip closure. Keeping your nipple shields and nursing tools organized in a dedicated pouch helps maintain hygiene and ensures you have everything you need during a pumping session, especially when you're away from home.

Fit Guidance: Who Should Choose What

Best For

• Moms with flat or inverted nipples who need help pulling the nipple out for a latch.
• Breastfeeding moms experiencing nipple soreness who need a protective barrier while nursing.

Not For

• Moms who need a permanent feeding solution if the latch issue isn't resolved—consider consulting a professional.
• Babies with severe tongue-tie or other anatomical issues where a shield might not fix the underlying problem.

Choosing the right nipple shield is a personal process, but with accurate measuring and a focus on comfort, you can find a solution that makes breastfeeding easier. Listen to your body and your baby, and don't hesitate to ask for professional help when needed. For clean and organized pumping sessions, consider the Shield Maiden Nipple Shields and the Pumping Accessory Pouch to keep your supplies in order.