Luggage District Bett PP hardside Expandable Suitcase. PP material: Polypropylene plastic is the lightest of suitcases in the market. It's made of a thermoplastic polymer that's quite strong, but lightweight material, top-quality materials for enhanced durability, these are light weight luggage that is super easy to carry. The four premium spinner wheels will ensure a hassle-free and comfortable travel experience. 3 Digit TSA lock with a resettable number code for secure travel to any destinatio