The Dakine Shuttle 6L Hydration Backpack is the perfect solution to hydration without added bulk. This minimalist pack features a generous 2-litre vertical hydration system with a Phaser bite valve. This lightweight pack features plenty of cooling features including a breathable air mesh back panel and shoulder straps. Essential features include a fleece-lined sunglass pocket, an internal pump sleeve, as well as an integrated rescue whistle on the sternum strap. The Shuttle lets you drop in with no distractions.Dakine Shuttle 6L Hydration Backpack Features2L / 70 oz. Hydrapak® reservoirPhaser bite valveBreathable air mesh back panel and shoulder strapsFleece-lined sunglass pocketInternal pump sleeveIntegrated rescue whistle/sternum strapDakine Shuttle 6L Hydration Backpack SpecificationsVolume: 360 cubic inches (6L)Dimensions: 17 x 7 x 2 (43 x 18 x 5cm)Weight: 1 lbs. (.47kg)Material: 100% 450D ripstop recycled polyester (rPET) exterior\"