You can store and handle breast milk easily with the four breast milk bottles (two 150ml bottles and two 250ml bottles) and five Pump & Save breast milk bags included in the set. All products are BPA free, so they are safe to collect, store and feed your baby breast milk. Easy expression, collection and storage of breast milk during the entire breast milk feeding phase. Convenient, space-saving storage in the fridge or freezer. BPA free – safe for you and your baby