Description The wearable breast pump flange inserts are made of silicone material, durable and long-lasting. Designed for use with wearable and electric breast pumps, these inserts are easy to replace and provide a simple, convenient experience. Safe, reliable, and universally compatible, they offer excellent performance and comfort. Features - Color: As shown - Material: Silicone - Size: 4.60 x 3.40 x 3.40 cm / 1.81 x 1.34 x 1.34 in - Includes sizes: 13mm, 15mm, 17mm, 19mm, 21mm - Made of high-quality silicone for durability and long-term use - Smooth surface with no burrs, safe for skin contact - Compatible with electric and wearable breast pumps - Simple, well-crafted design for reliable performance - Easy to use and maintain Packing List 1 x 21mm breast pump flange insert 1 x 19mm breast pump flange insert 1 x 17mm breast pump flange insert 1 x 15mm breast pump flange insert 1 x 13mm breast pump flange insert