This item is manufactured especially for breast pump. They can help collect breast milk. Made of food grade silicone material, they are safe and for durable and practical use. The counterflow and duckbill design can collect breast milk smoothly. Features - Color: As shown.- Material: Silicone.- Size: Approx. 3x2.2x3.5cm.- and silicon material is safe for both mother and baby.- Counterflow and duckbill design can help breast pump collect breast milk smoothly.- It is suitable for manual and electric breast pump.- The surface of the product is full frosted, transparent and without burrs.- Warm Tip: Dear buyer, due to lighting effect, monitor's brightness, manual measurement, etc., there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand! Thank you!Packing list: 10 x breast pump