Two mounting systems included: a seat harness or adjustable sissy bar strap system easily attaches bag to the motorcycle's seat, luggage rack or sissy bar. Constructed with UV-, water- and weather-resistant 1200-denier material. Rugged blend of fabric and leather-grained materials look great on any type of motorcycle. Internal structure maintains bag's shape even when empty. Backrest pad can be adjusted for additional comfort for the passenger or driver. 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. Includes another large top-loading main compartment. Padded laptop storage compartment and organizer pocket. Six external pockets, two of which can be expanded for added capacity. Five internal mesh pockets. Two outer mesh pockets. Rain cover with security tether protects the bag from the elements. Integrated MOLLE modular attachment points for storage customization. All strap ends include unique keepers system which eliminates the need for cutting after the bag is installed. Top exterior flap can be adjusted to carry a jacket. Measures 15" H x 11" W x 10" D.