Product detailsThis? 5 sets of Swiss Polo Luggage Box comes in 4 Wheels. it is made of Strong Quality Polyester material that provides greater protection to your properties and expands more by 2” when you need more packing space.The 4 Wheeled Trolley Luggage system provides excellent movement whether you pull or walk along with your case. Buckled back closure system, Gain improved wadding capacity with the simple pull of a zipper closure; perfect for packing souvenirs, clothing, computer/digital accessories and other suitable items.