From Eagle Creek, the Expanse 4-Wheel 60L/26 features: Rugged multi-directional wheels and a heavy-duty wheel housing. Expansion zipper for added storage, interior compression straps and zippered mesh door panel pocket help make staying organized easy even when you overpack. Durable and bluesign approved 100% Recycled Poly Ripstop construction makes this bag is as good for you as it is the planet. 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 seperately) External dimensions: Standard approx.: 25.75 x 15.75 x 11 in. / 65 x 40 x 28 cm Expanded approx.: 25.75 x 15.75 x 13 in. / 65 x 40 x 33 cm Weight 7 lb. 2 oz. / 3232 g Internal capacity: Standard approx.: 4114 cu. in. / 60 L Expanded approx.: 4455 cu. in. / 73 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.