Features: 1. Perfect Fit & Universal Compatibility – Designed to work with most electric breast pumps, especially wearable models. The 17mm insert size offers a comfortable, secure seal. 2. Soft & Durable Silicone – Made from flexible, wear-resistant silicone that’s gentle on skin and built to last through daily use. 3. Effortless Milk Expression – Helps create a better seal for more efficient pumping, so you can express milk comfortably and conveniently. 4. Simple & Practical Design – Easy to use and clean, with a no-fuss shape that gets the job done without any hassle. 5. Great Value 4-Pack – Includes four flange inserts so you’ll always have a spare ready when needed. Product Details: These silicone flange inserts help improve comfort and suction during pumping. They’re compatible with most electric and wearable breast pumps, made from soft yet durable silicone, and come in a handy set of four for reliable, everyday use. Specifications: - Color: Transparent - Material: Silicone - Product Dimensions: 4.60 x 4.60 x 3.40 cm / 1.81 x 1.81 x 1.34 in - Flange Size: 17mm - Package Includes: 4 x Flange Inserts