This 2 pc. Set is made of Polycarbonate. This material is extremely lightweight, 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. 5 year warranty. 20"X13"x9" weighs 6 lbs, 28"x17"x12" weighs 10 lbs.