The elite jossanova bottle is made with 100 bpa free material that resists bacteria and keeps your drinks tasting fresher for longer this cycling water bottle features the advanced jossa valve and sealable bottle top which makes this bottle absolutely leak proof jossa membrane valve uses tasteless medical grade silicon and delivers 47 ml per second with minimum effort elite jossanova bottle features elite39s flagship bottle no 39bite valve39 just squeeze to drink 100 leak pro