The Sky Max Expandable Spinner is geared toward every adventurer's needs. Made from lightweight and durable MicroBallister with a vapor barrier for long lasting use, you'll love being able to deploy the dual-position TROLLEY system that features two or four wheel use. The three front pockets ensure maximum organization while the back pocket can be used to store magazines, jackets or dirty clothing to keep up with your needs. Enjoy your travel days while using this essential luggage. 21-in. Expandable Spinner: 20.5-in. x 13.5-in. x 9.5-in.; 9-in. interior depth 25-in. Expandable Spinner: 24.5-in. x 17-in. x 10.75-in.; 10-in. interior depth 29-in. Expandable Spinner: 29-in. x 19-in. x 11.5-in.; 11-in. interior depth