Material: all made with 1800 denier water repellent polyesterhoneycomb 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: 627168 cu. in.Colors: Black.