When you"re shuttling downhill bike runs or skiing at the resort, there"s no need to lug around a huge backpack just to have water. The Dakine Shuttle Hydration Pack is slimmed down with just enough room for enough water for an afternoon and a small pocket to hold your keys, wallet, and other essentials. Durable 630D nylon fabric resists tears in case you take a spill riding down the trailDriMesh back panel and shoulder straps are breathable to keep you coolRemovable waist belt provides a snug fitFleece sunglasses pocket keeps lenses from getting scratched and stores other small itemsRescue whistle included for emergencies