1、Strong Compatibility: Replacement membranes are compatible with many brands of manual breast pumps and mini electric breast pumps, and is perfect for mums when breastfeeding. 2、Quantity: You will receive 16 spare membrane sheets. A plentiful supply to fulfill your replacement requirements. You can replace old or broken ones with new ones. 3、Easy To Clean: All parts of membranes can be cleaned with boiling water or steam, which is ensuring clean and hygienic use while you are using it is not bad for your health. 4、Convenient To Carry: This breastpump membrane is a practical accessory for breastfeeding mothers. The suitable size makes it easy to carry and store, providing great convenient for you. 5、Silicone: Suitable for manual and electric breastpumps as replacement parts and constructed with silicone material, excellent heat resistance to withstand high cooking and baking temperatures. Item Type: Pump Silicone Membrane Material: Silicone 16 x Pump Silicone Membranes