MEC Coop 15L Daypack with 3L Hydration Reservoir Size approx 18" x 11.5" x 4.5" Approx 15-16 L capacity Water resistant rip stop denier Waterproof sealed zippers Comes with a 3L reservoir Airmesh comfort back panel and double shoulder straps Waist belt Sternum strap 2 large side zippered pockets for extra gear of bike tools Front daisy chain for extra gear Excellent like new condition with no use $75 Firm **************** ideal for biking, walking, hiking and travel