4oz/118ml 

The revolutionary air-free feeding design of Boon 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.