Universal, quick-detach mounting system quickly secures bag to frame, passenger pegs, etc.; tunnel straddles most racks and back seats for easy on/off mounting. Soft duffle construction helps bag conform to your preferred mounting location. Zippered side expansion allows storage of longer items like tent poles. Wide top opening with lockable zipper for easy packing. Top carry handle and shoulder straps for easy toting off bike. Top-mounted compression straps let you carry a jacket or other loose items safely. Exterior zippered pockets provide easy access to things you need on the road. Constructed of UV-, water- and weather-resistant 1200-denier SaddleTuff. Dimensions: 25.5″ W x 13″ H x 12″ D ; measures 3,200 cubic inches.