Material: all made with 1800 denier water repellent polyester honeycomb bottom ( for best support ). Rollerblade wheels . pull-up handle with push button for easy operation. Interior is fully lined. Up-right board at end side of wheels to contain load. Corners protected with hard rubber bumpers. 4 outside pockets. Adjustable shoulder strap. Limited Lifetime Warranty. Size: 36"x 16"x 20" Linear: 72" 11,520 cu. in. *Zipper Pulls are Yellow in this style only and not red as pictured