Donkey Drybags are waterproof and perfect for commuting around town. Simple on and off with quick release attachment to fit most bikes. *Quick rollup type closure, & TPU RF welded material for 100% waterproof construction. *Tool free hook adjustment allows different mounting positions on bike rack. *Removable inserts allow fitting on 10mm to 17mm tubing on bike rack. *Includes carry handle and outer zippered compartment. *Screened on reflectors on side for visibility * Large Capacity, 16" x 12.5' x 6" of 1200 ci