The MAM Anti-Colic Bottle ensures easier feedings for your baby. Vented base with small air holes allows for maximum air flow and balances air pressure inside the bottle to reduce gas and burping. Wide opening makes filling and cleaning easy. BPA-free Includes (3) 5 fl. oz. capacity bottles Vented base with small air holes and silicone seal allows for maximum air flow, ensuring a controlled milk flow by balancing air pressure inside the bottle Stage 1 (Slow Flow) Liquid is pushed toward the nipple, allowing it to retain its shape and prevent bottle collapsing. Features MAMs patented ultra-soft silicone nipple for an easy transition between breast and bottle Leak-proof plastic cap keeps nipple clean Bottle has measurement tick marks. Wide openings, removable base, and 5 parts make cleaning easy. Can be taken apart in 3 steps and sterilized in the microwave without a separate sterilizer in just 3 minutes, making it ideal for on-the-go feeding. Suitable for newborns and older Imported.