Boon NURSH bottles help kick colic to the curb. The revolutionary air-free feeding design employs a 100% silicone pouch that collapses as the baby drinks, preventing colic symptoms. The optimal nipple shape and length makes latching easy, while the patented design ensures milk only touches food-safe silicone. Vents or valves introduce air into milk in other bottles, but NURSH doesn't. Cleaning and assembly is also a snap.