Rugged 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. Strudy grip handle for convenient carrying. Included detachable backpack straps for easy off-the-bike jaunts. Spacious top-loading main compartment is large enough to hold one "3/4" helmet plus other cargo. 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 the elements. Top exterior flap can be adjusted to carry a jacket. Mini-padlock for security (includes extra keys). BR3400EX measures 19 in. H x 14 in. W x 12 in. D (1,800 cubic inches cargo capacity) and holds one full-size helmet plus other cargo.