Traveler's Choice 28" Hardsided Lightweight Spinner Luggage,Green,US The shell is constructed of durable hard shell with a scratch resistant finish The shell flexes to absorb the impact and then afterwards flexes back to its original shape The scratch resistant surface prevents your suitcase from being scuffed Aluminum telescopic handle system with push button locking for easy maneuverability Ultra-light 4-wheeled system makes rolling effortless