This 3 pc. 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. Eight 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. Included with the 3-piece luggage set is our 7-piece travel accessories set. Accessories set includes 3 ultra light packing cubes allowing you to pack your luggage more efficiently. 3-Packing cubes have 3 sided zippers and mesh tops (Small: 8"x5"x6", Medium: 12"x5"x8. 5", Large 14"x5"x11"). 3 zippered packing pouches are versatile and keep you organized. (Small: 6. 5"x5" Medium: 7. 5"x10" Large: 13"x9"). Packing cubes and pouches made of polyester. Also included is a Polyester luggage protector for the 28" upright. Your checked luggage piece will always remain in great condition with the protector. Luggage measures: 22"X14"x8" (with wheels) weighs 6 lbs, 24" x15"x10" weights 8 lbs, 28"x17"x12" weighs 10 lbs.