Get the Right Fit: Breast shield size is crucial to pumping success; Get the most out of your pump sessions by using the correct size flange; Use our guide to measure yourself; Find your size: 16 mm, 19 mm, 21 mm, 24 mm, 28 mm, 32 mm Comfortable & Effective: Contoured to fit comfortably during pump sessions; The smooth surface prevents uncomfortable friction for elongated and elastic nipples Easy On The Go Pumping: Pumping life is busy; Keeping extra spare parts on hand reduces time spent on set up and mid-day cleaning; Easy to clean; Just use soap and water; Dishwasher safe, top shelf Compatible With All Pumps: Cimilre Breast Shields are compatible with all Cimilre Breast Pumps, including the Cimilre S6 Adjustable, Cimilre S6+ Adjustable, Cimilre S7 Dual Pro, Cimilre P1 Portable, Cimilre E1 Portable Support for Every Journey: Cimilre offers sleek, innovative breast pumps and accessories designed to fit every lifestyle, from ultra-portable to fully adjustable; Our breast pump parts are phthalate, BPA, and BPS free, ensuring safety and peace of mind Included in these baby breastfeeding essentials are two premium-quality breast shields for pumping designed with your comfort and efficient milk expression in mind. These breast pump replacement parts ensure your pumping sessions are both comfortable and efficient, enabling a customizable fit that feels uniquely tailored to you. Understanding the importance of a perfect fit, we offer a wide range of breast shields milk catcher sizes to suit every mom's needs, including 16mm, 19mm, 21mm, 24mm, 28mm, and 32mm. Breast pump valve not included. To optimize your pumping efficiency, we highly recommend ensuring a proper fit of the nursing breast shield, Pumping should not hurt or be uncomfortable. With over 20 years of passion and dedication in the global market, Cimilre's mission has always been to support moms in achieving their nursing breastfeeding goals. By choosing Cimilre, you're not just selecting a product but also embracing a community that understands, supports, and walks with you on this beautiful journey of motherhood. The well-being of you and your baby is at the heart of everything we do.