This is one of Winning's exclusive 4-wheel luggage which is well thought out of and designed for every travellers needs. The luggage casing is unbreakable and of utmost quality. The zipper is a double grade layer reinforced zip (Theft Prevention). It comes with 2 thick inner layer cushioning with spacious compartments. It also comes with a TSA (Travel Sentry® Approved) lock which will give more security for those frequent travellers travelling around the US or Europe region.