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 feature a 100 percent 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. Boobs, you've met your match. Color: Gray. Gender: Unisex.