Durable Construction: Made from a hard-sided polycarbonate shell, offering superior protection against travel. Fitted with YKK puncture-resistant zippers to ensure added security and durability. Smooth Mobility: Hinomoto Lisof double spinner wheels ensure quiet 360° movement, and the multi-stage handle with side divots supports added bags, allowing seamless navigation and hands-free movement. Expandable Design: Provides an additional 2 inches of packing space, giving you the flexibility to fit extra outfits, bulkier essentials, or last-minute souvenirs. TSA-Approved Combo Lock: Built-in TSA lock provides peace of mind with enhanced security allowing airport staff to inspect luggage without damaging the lock. Organized Packing: Spacious, fully lined interior with Shield-98 to keep your luggage clean and fresh. Check-in sizes feature a compression board and tie-down straps, plus a tracker pocket (device not included) and a Shield-98 laundry bag to keep clean and dirty clothes separated.