The name says it all! The MondoPack Hydro is an oversized saddlebag for extra large adventures. Two side opening panels provide huge access to all your gear and feature inner mesh pockets to keep items like keys and small tools secure. An external water bottle pocket lets you carry more water on extended trips or serves as an excellent place to keep your lightweight jacket as the weather changes. An excellent bag for suspension bikes, folding bikes, endurance racers, randonnée, century / charity events, day touring or for cyclists who like to carry extra gear.