The Heys Velocity is a 4 wheel Spinner luggage that is made from aPolycarbonate composite and is equipped with Replaceable Wheels, a first forHeys! The Carry-On is expandable to give you up to 25% more packing space whenneeded. It also has a push-button telescopic handle system, and has a fullylined interior with a divider. Each case is equipped with a built-in TSA lockfixed to the body of the luggage to ensure your contents are kept secureduring your travels. By The Best New Products