Finding the perfect breast pump shield is crucial for comfortable and effective breastfeeding. This guide focuses on Medela PersonalFit breast shields, offering a comprehensive look at how to choose the right size and maximize your pumping experience. We'll explore the various sizes available (21mm, 24mm, 27mm, 30mm, and 36mm), the differences between older and newer models, and the benefits of Medela's SoftFit option for added comfort. We’ll also provide tips for ensuring a pain-free pumping session and maintaining optimal hygiene.This guide will help you understand the importance of proper fit, detailing how an incorrectly sized shield can lead to discomfort, nipple damage, and reduced milk flow. Learn how to measure your nipple size, identify signs of improper fit, and address common issues like soreness and mastitis. Discover practical advice on maintaining hygiene, optimizing your pumping posture, and ensuring a positive and productive breastfeeding journey with Medela PersonalFit breast shields.
Pros And Cons
- Available in various sizes (21mm, 24mm, 27mm, 30mm, 36mm) to accommodate different nipple sizes.
- SoftFit option available for added comfort, especially during mastitis.
- SoftFit material provides gentle massage during pumping.
- Older 24mm design with built-in adapter is becoming obsolete.
- Smaller sizes (e.g., 21mm) may be harder to find.
Read more: 5 Best Vented Baby Bottle Nipples
Understanding Medela PersonalFit Breast Shields
Choosing the right breast shield size is crucial for comfortable and effective pumping. Medela PersonalFit breast shields come in a range of sizes (21mm, 24mm, 27mm, 30mm, and 36mm), each designed to accommodate different nipple sizes and shapes.

The millimeter measurement refers to the inner diameter of the shield's opening. A larger nipple will require a larger shield size to prevent discomfort and ensure proper milk expression. Improper fit can lead to pain, nipple damage, and reduced milk flow.

It's important to note that the design of the shields has evolved. Older models had the adapter built into the shield, creating a one-piece unit. Newer models often have a separate adapter that connects to the breast pump.
The packaging clearly indicates the size, allowing you to easily identify the correct shield. Medela also offers a 'SoftFit' option made from a softer, more pliable material for added comfort, particularly useful for mothers experiencing nipple soreness or mastitis.
Size Selection and Personal Comfort
Finding the right fit is essential for a pain-free pumping experience. If the shield is too small, it can pinch and cause discomfort, while a shield that's too large may not effectively express milk.

Consider your nipple size and shape when selecting a shield. You can measure your nipple diameter using a ruler or refer to Medela's sizing guide. Experiment with different sizes to determine your best fit.

The 'SoftFit' breast shields are recommended for mothers experiencing mastitis or significant nipple soreness. The softer material provides gentle massage and additional comfort during pumping.

Remember, proper flange selection can significantly impact the effectiveness and comfort of your pumping session.
Additional Tips for Pumping Comfort
Using lanolin cream on your nipples before and after pumping can help prevent soreness and dryness. There are many brands available, choose one that you find comfortable.

Pay attention to your body’s signals. If you experience pain during pumping, stop immediately and check your flange size and positioning. Adjust as needed or try a different size.
Regularly clean and sterilize your breast shields and pump parts according to the manufacturer's instructions to prevent bacterial growth and maintain hygiene.
Maintaining proper posture while pumping and avoiding over-pumping are also important for comfort and milk production.
Conclusion: Is Medela PersonalFit Worth It?
Medela PersonalFit breast shields are a worthwhile investment for mothers who prioritize comfort and efficient milk expression. The wide range of sizes ensures a proper fit for most individuals.

The SoftFit option offers a significant advantage for mothers experiencing nipple sensitivity or mastitis. The combination of size options and material choices makes Medela PersonalFit a strong contender in the breast shield market.
The convenience of easily identifying the correct size on the packaging is a significant plus. While the price may be slightly higher compared to other brands, the long-term comfort and effectiveness make it a valuable product.