Imani Milk Collection Bottles, 5oz is a BPA & DEHP-free wide nack breast milk collection bottle that is compatible with imani breast shield without a bottle adapter – so you can pump directly into the bottle without the risk of contamination. Suitable for refrigerators and freezers with 5oz capacity for each bottle. Wide Neck milk collection bottle compatible with Imani breast shield (no adapter required) Perfect to use with Imani i1plus electric breast pump! Safe to keep in freezer, refrigerate BPA-free, DEHP-free Contains 4 x Bottle, 4 x Bottle Cap, 4 x Sealing Disc (Teats not included) Capacity 5oz Material: Bottle & Bottle Cap (PP); Sealing Disc (Silicone) Include 4 x Bottles only, Breast pump and other accessories featured are not included. How to sterilize the accessories (plastics) Use a pot large enough to fit all the parts If the pot is too small, it may cause discoloration and/or distortion of the parts When adding a part, fill it with water so that it is at least 4 inches above the part When the water reaches the boiling point, turn off the heat and put the accessories in the water Take out the accessories in 3-5 minutes Reference : Do not sterilize accessories in boiling water for more than 5 minutes as prolonged exposure to heat may damage the accessories. *** For maximum suction, parts like valve, cap must be replaced every 2-3 months, cups every 4-6 months ***