BR3400EX Combination Backrest, Backseat, and Sissy Bar BagRugged blend of leather-grained materials looks great on any type of motorcycle Rigid internal structure is strong enough to lean on, even when empty No sissy bar required Two mounting systems included: Saddlemen's Versa Mount™ seat harness or adjustable sissy bar strap system easily attach bag to motorcycle seat, luggage rack, or sissy bar Included backrest pad can be adjusted for additional comfort for the passenger or driver Sturdy grip handle for convenient carrying Includes detachable backpack straps for easy off-the-bike jaunts Spacious top-loading main compartment and large top-loading main compartment Padded storage compartment fits small laptop Four external pockets and five internal mesh pockets Easy-to-use side release buckles on each strap, decorative chrome buckles provide style Rain cover with security tether protects the bag from elements Top exterior flap can be adjusted to carry a jacket Mini-padlock for security (includes extra keys) Measures 14" W x 19" H x 12" D; 3,400 cubic inches cargo capacity; holds one full-face helmet plus other cargo EU measurements 35,56 cm width x 48,26 cm height x 30,48 cm depth. EU cargo capacity 55,72 L, holds one full-face helmet plus other cargo.