Features: 【STRONG COMPATIBILITY】The duckbill valve is a must-have breast pump accessory, it is compatible with most breast pumps, replacing the broken or old ones. 【STURDY RELIABLE】The duckbill valve is made of silicone material, with high toughness, soft and durable, not easy to crack. No smell, reliable to use. 【HEAT RESISTANT】Silicone material is high temperature resistant, it can be washed in water steam or boiling water, more hygienic, reusable and safer. 【ANTI BACKFLOW】The diaphragm is specially treated, with stronger elasticity, which fits the breast pump completely and effectively prevents milk backflow. 【EASY TO INSTALL】Thickened base design, easy to disassemble. Remove the valve from extended base to avoid damaging the valve tips. Specifications: Color: white Material: silicone Size: (L x W x inner diameter)about 33 x 28 x 24mm/1.30 x 1.10 x 0.94inch Package Includes: 1pc x Breast pump duckbill valve Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 0.5-2 cm differences due to manual measurement.