The britto shell is made of a polycarbonate composite, and is protected by alayer of clear coat paint that gives it a high gloss luster it has a modernaluminum telescopic handle system, with push-down locking for easy, single-hand use, and cushioned tpr grip for comfort inchsmart wheels inch are largerin the rear for greater control and smooth movement the britto luggage has afully lined interior customized to compliment the shell art, clear-view multi-use organizational pocket for ease of packing that also doubles as a divider,keeping your items secureit has a built in travel sentry tsa approved 3-digitcombination lock allows baggage screeners to open your luggage for inspection,and relock for your security 7 year worldwide inchbetter life inch warranty