Take your backpack on any adventure with The Hauser Weatherproof Hydration Pack. Thanks to its weatherproof design, you can use The Hauser in all conditions to confidently keep your gear dry. Featuring perforated shoulder straps and back panel, the pack offers ideal moisture management and ventilation. It also comes with a frame sheet for additional structure. Complete with four weatherproof exterior pockets, you can easily organize and access all your gear. The main compartment features a roll-top closure that you can also convert into a flap-down configuration. By turning it into a flap-down closure, the front zippers have more coverage. Additionally, The Hauser comes with a tool-roll that offers four extra zippered mesh pockets for your essential hand tools. Likewise, the tool-roll is fully removable. The Hauser also works with most hydration reservoirs with up to a three-liter capacity.