Milk purity is protected by the HygieniKit's patented silicone barrier design. Use with any Ameda electric breast pump for easy double pumping; or convert to single pumping. Preassembled and ready-to-use in convenient sterile packaging. Includes: Instructions 1- Storage Bag 2- Adapter Caps 2- Diaphragms 2- Breast Flanges (25mm) 4- Valves 2- 4oz/120 ml bottles 1- Tubing Adapter 2- 36-inch tubing 2- Caps with Locking Rings