The Tucano Urbano B-Three Watertight tube bag measures 28 x 24 cm x 45 cm H with a 20-litre capacity. It offers a fastening system with elastic hooks that can be attached to the luggage rack/vehicle frame. Made from an ultra-durable exterior in tarpaulin, it has a watertight closure, roll up with a bayonet hook with adjustable tape and shoulder strap.