Conveniently sized for just about any trip expandable to carry all your gearFully adjustable sissy bar mounting system goes on in seconds over any size and style sissy bar pad once adjusted for your size pad, you never need to adjust it againRigid construction holds bag shape even when emptyTop carry handle, backpack straps and shoulder strap for easy toting off bikeFold-down duffel bag included for extra capacity attaches to S2200E's top cargo straps, which can also be used to tie down a jacket, rain, gear, etc.Five weather-resistant external pocketsTop pocket office organizer and lockable zipper pullsConstructed of UV-, water- and weather-resistant 1200-denier SaddleTuff™ panelsDimensions: 18'' H x 15'' W x 8'' D expands to 18½'' W measures 2200 cubic inchesEU dimensions 45,72 cm height x 38,1 cm width x 20,32 cm depth, expands to 46,99 cm width. EU capacity 36,05 L