The Hydrapak SkyFlask is built for Mountain Running in the Eastern Sierra! This revolutionary water bottle is designed to provide you with the perfect combination of convenience and performance. Its unique SpeedFill™ cap flips open for quick refills and snaps closed for a spill-proof seal, so you can quickly rehydrate without having to worry about spilage. The adjustable strap cinches down to fit different hand sizes, and the soft design shrinks as you drink, reducing water movement.
