From Eagle Creek, the Expanse 4-Wheel Carry On features: This bag is loaded with features including an expansion zipper for added storage, built in attachments for your favorite Pack-It organizers,( sold separately) and self-repairing lockable zippers. Constructed using bluesign certified ripstop and 100% recycled fabrics, you can purchase this bag knowing it s a sustainable choice. Front zippered pocket for easy access Interior zippered mesh pocket with key clip Internal adjustable compression Expandable main compartment adds capacity when needed Heavy-duty lash points and grab handles External mesh ID pocket Lockable zippers with central lock point Telescoping handle Four multi-directional spinner wheels with reinforced corners Flap pocket with divider for Pack-It integration ( sold separately) External dimensions: Standard approx.: 22 x 13.75 x 9 in. / 56 x 35 x 23 cm Expanded approx.: 22 x 13.75 x 11 in. / 56 x 35 x 28 cm Weight approx. 6 lb. 6 oz. / 2892 g Internal capacity: Standard approx.: 2475 cu. in. / 38 L Expanded approx.: 2746 cu. in. / 45 L This is a calculated volume taken from the product dimensions. Actual dimensions and volume may vary slightly by product due to sewing tolerances throughout the production process. Materials: 100% Recycled 600D Polyester 100% Recycled 450D Polyester 100% Recycled 200D Polyester Imported.