Designed for every type of riding and every style of bike, this tunnel bag will fit everything from sport bikes to cruisers and everything in between. The aerodynamic shape and rider-convenient features make stashing your gear easy and does it with leading edge style. The tunnel straddles most racks and seats for easy on/off mounting. The unique combination of features and tactical look set this bag apart from all others.; Designed to fit perfectly between the rider and the tour pack Constructed of UV-, water and weather resistant 1200D Holds shape even when empty Multiple oversized mounting rings around the bag overcome unique mounting challenges Multiple external pockets providing Integrated Molle attachment mounting option Strong, nylon meshing zipper teeth with black sliders equipped with large pulls for easy use with a gloved hand Tech organizer perfect for smartphones, digital cameras, or MP3 players Reflective rain cover with locking cinch cord included Dimensions: 25" W x 13.5" H x 11" D (expands to 27" W); measures 3,200 cubic inches