1.Main material in 600D Polyester 2.Self-locking 3-section retractable rectangular handle system 3.In-line skate wheel system 4.Padded wheel cover system with a shoulder strap 5.Bottom reinforced with thickl tray for better balance 6.1 main compartment, and 2 roomy front pockets 7.Large front-load main compartments holds clothes or books 8.Zippered front accessory pocket with organizer 9.Padded backpack straps stored behind fabric panel which folds down to cover wheels 10.Multi-pocket at both sides for extra accessories