No more suitcases damaged by customs! The TSA combination lock allows you to secure your luggage with your personal code while letting the Transport Security Authority (TSA) control it without damaging it using a specific key. The hull of Belmont Plus is entirely made of polypropylene, the most impact-resistant material, to protect your most precious belongings! Belmont Plus has four multi-directional and silent double wheels. Traveling to the four corners of the world and browsing through airports is a pleasure thanks to their driving comfort.