sharkmouth flyhiker hiking hydration backpack pack with 2.5l bpa free water bladder, lightweight and comfortable for short day hikes, day trips and trails, gray sharkmouth <b>why is this best choice for outdoor sports?</b> <p>high quality water bag</p> <p>insulated water bag tube</p> <p>thermal insulation</p> <p>multi-space multi-layer pocket</p> <p>adjustable shoulder straps, chest straps and belts ensure that fits your body size</p> <p>breathable back lining</p> <p>emergency whistle in case of emergency</p> <p>reflective strips keep your visibility</p> <p>external rubber bands can be used for extra carrying of other things</p> <p>the keychain ensures that the key is in a clear position</p> <p>mouthpiece valve is not easy to leak</p> <p>presumably all of the things here are the focus of every outdoor hobby</p> <p>you have it, it won't let you down.</p>