The Velocity 13 Rucksack from Osprey is designed to be extremely comfortable, durable and with plenty of user friendly features for active sports. The expandable shield front pocket offers quick access storage for longer outings, the Airscape backpanel offers supreme levels of comfort and the triple diamond ripstop fabric provides excellent durability. It is hydration bladder compatible so that you can access water more easily while on the move which in turn will help you keep more efficiently hydrated. A great pack for multi-sports enthusiasts.