Features: Our wearable electric breast pump accessories are designed for convenience and comfort, making them ideal for nursing mothers. Made with durable PP and silicone materials, these accessories ensure safety and long-lasting use. Suitable for busy mothers, our wearable electric breast pump accessories provide a convenient pumping experience, allowing multitasking while expressing milk. Whether at work, traveling, or during personal time, our wearable electric breast pump accessories offer discreet and efficient pumping, ensuring privacy and convenience in any situation. With easy assembly and compatibility with S18 and S21 wearable electric breast pumps, our accessories make it simple to maintain your milk supply and nourish your baby. Specifications: Material: PP + Silicone Type: 24mm Flange, 27mm Flange, Milk Collector, 24mm Set, 27mm Set (optional) Silicone Diaphragm: Approx. 46 x 40 mm Duckbill Valves: Approx. 11 x 26 mm Compatible with S21 and S18 Electric Breast Pumps Package Includes: 1 x Flange or 1 x Milk Collector or 1 x Milk Collector with Silicone Diaphragm and Duckbill Valves Note: Please allow for a 1–2 cm measurement variance due to manual measurement. Color may vary slightly depending on screen resolution.