roswheel hydration hiking backpack handles all your after work bike rides. Its included 2L Shape-Loc hydration reservoir retains its shape to the last drop of water, and it features new high-flow Blaster bite valve and a magnetic hose clip. Roswheel waterproof hiking backpack made the back panel and shoulder straps out of air mesh for breathable comfort, and the waist belt is removable for your convenience. This pack also has a padded phone pocket, a fleece-lined sunglasses pocket, and internal organizers for tubes, pumps, and tire repair kits.