This 3 piece set is made of polycarbonate,abs. Polycarbonate is the same material used to manufacturer bullet proof glass. The major benefits of this material - it is extremely lightweight, it is durable, and protects the contents of your luggage. Multi-directional spinner wheels rotate 360 degrees for easy maneuverability. This luggage allows you to pack more while avoiding the excess weight surcharges imposed by most airlines. Features multi-directional spinner wheels for easy maneuverability, modern internal chrome telescoping handle with push button handle, interior mesh and zip pocket and elastic pocket. Measures 20 inches long x 13 inches wide x 9 inches deep and weighs 6 pounds. 24 inches long x 15 inches wide x 10 deep and weighs 8 pounds. 28 inches long x 17 inches wide x 12 inches deep and weighs 10 pounds.