The Thule Subterra Luggage 55 cm / 22 '' can either be used as a single 56L piece of checked luggage or you can detach the front portion of the bag and have two independent carry-ons. The Thule Subterra Luggage combines durability and ruggedness, with the urban styling and design found in all of Thule's luggage line. Innovative 3-in-1 solution allows you to pack either one large checked piece of luggage or two smaller carry-ons. Easy to pack and stay organized with a spacious interior that divides into two separate compartments or opens into one large packing space. Smooth and easy transport with tough, oversized wheels and V-Tubing telescoping handles. Effortless travel thanks to the piggyback strap attachment loop that allows an additional bag to be hooked on. Bag design absorbs the impact of travel due to the durable exoskeleton and moulded polycarbonate back panel. Separate your shoes and dirty laundry from other belongings in the multi-purpose compartment. Smooth lifting and rearranging in overhead bins with top, side and bottom grab handles. Keep belongings in place throughout travel due to external compression straps. Quick access to keys, wallet and smaller items through zippered mesh pocket. Built in ID card slot simplifies identification of bag. Volume: 56 Litres / 3416 Cubic Inches. Height: 55 cm / 21.7 in. Length: 37 cm / 14.6 in. Depth: 36 cm / 14.21 in. Weight: 7.6 lbs / 3.45 kg. Material: Nylon.