This spinner is made from extremely lightweight Curv material with an incredibly strong, shock-absorbing shell design. Samsonite is the only travel product manufacturer in the world with Curv technology. This thermoplastic concept is extremely lightweight and offers exceptional shock resistance. The shell shape and woven layering process are patented by Samsonite. The integrated TSA-approved lock provides added security when checking in your luggage. Four spinner wheels with airflow so you can easily roll an upright suitcase. Single-tube handle with push-button lock that adjusts to different heights. Divider and cross-tension straps keep your luggage secure.