Designed with on-bike, or even off-bike, travels in mind. To visualize the main interior volume, it holds 48 beer cans of 355cc. Manufactured from 1680 Denier/PVC outer shell with hi-vis orange interior lining. Two large external zippered pockets are present for quick access fuel or water bottles. The back of the main compartment contains a padded sleeve which will hold a laptop. Complete with compression straps. Additional straps will allow holding a bedroll, jacket or so to the back and allow secure installation to your bike. A ventilated back panel keeps some room between your back and the pack when actually carrying it as a backpack. Dimensions: 11.5" (29.2cm) wide x 18" (45.7cm) tall x 10" (25.4cm) deep.