Check-in size For bulky items, such as camera equipments, sewing machines, projector & DVD player etc. D Dimension: 22" L x 15" H x 10" D Top access measures 18"L x 8 1/4" Material: Black Nylon Available Colors: Black TUTTO SPECIAL FEATURES Collapsible Collapses to 3 1/2" for easy storage. Stackable Broad-based frame allows stacking of up to 100 pounds on top. Stability 4-wheel drive system provides no-tip stability, lessens the weight and strain. Steering The U-shaped puller bar is anchored to the outer edges of the frame, rather than in the middle of the case like most pulling luggage. This assures greater steering control over all surfaces, and provides fingertip control maneuverability of the luggage. Lightweight Light, strong, and resilient. The broad-based Fiber Glass Frame makes Tutto the easiest piggyback luggage in the market. 1680 Denier Ballistic Nylon Fabric Made from fibers similar to those in bulletproof vests. Tear, puncture and water-resistant Polycarbonate Alloy Hinges and Corners This is the most impact-resistant material in the industry Built-Into-Frame Wheels Much better protected. The front 360-degree wheels have a rivet 3 times longer than most, providing a studier attachment. The rear wheels are protected by a one-piece mold made out of polycarbonate alloy.