This 3 piece set features a Backpack, 21" Spinner, and a 25" Spinner. Spinner Features: Dual spinner wheels. Expandable. Two front pockets, including ticket pocket. Integrated ID tag on backside. Interlocking zippers for TSA lock on main compartment. 2 pockets on interior - one mesh and one wetpocket™. Elastic compression straps. Backpack Features: Padded laptop compartment holds up to a 15.5" laptop, and a tablet sleeve. SmartSleeve™ 2 mesh water bottle pockets. Large main compartment. Large front pocket with organization. Spinners and Backpack constructed of 1680D Polyester. Dimensions and Weights on Spinners: 21" Spinner - Case - 21" x 14.75" x 8". Overall - 24.2" x 14.9" x 10" Weight: 8.1 lbs. 25" Spinner - Case - 25" x 18" x 10". Overall - 28.14" x 18.1" x 12" Weight - 10.1 lbs. Backpack Dimensions and Weight: 18" x 12" 8.5" Weight 1.4 lbs. Weight: 22.0 lbs. Body Dimensions: 25.0" x 18.0" x 10.0" Overall Dimensions: 27.0" x 18.0" x 10.0"