The snap-on nipple for the Calf Nurser Bottle features a patented air-release valve that prevents leaks yet allows air to release into the bottle as the calf nurses. This design ensures the proper flow of milk through the nipple to the nursing calf. Extra "bumpers" protect the valve for even longer wear. The surface of the nipple has been specially treated for ease of use.

Also available: Calf Nurser Bottle (#270500), sold separately.