INNOVATION. SUCK ON THAT. It's the best thing to happen to feeding since nipples. The revolutionary air-free feeding design of our NURSH™ Silicone Pouch Bottle features a 100% silicone pouch that collapses as your little one drinks, squeezing out the nasty gas-inducing air that causes colic. No straws, vents or valves here---so it's a snap to clean and assemble. The silicone can even be boiled, sterilized, microwaved, and frozen. Made without BPA or PVC. Includes 3 shells, 3 nipples, 3 collars, 3 silicone pouches, and 3 caps