From Eagle Creek, the Expanse 4-Wheel International Carry On features: A sustainable 4-wheel bag that is designed to fit in even the smallest of overheads. Ready for your next international adventure, the Expanse 4-Wheel International Carry On features an expansion zipper for added storage, weather resistant and 100% recycled fabrics to protect your gear, and built-in attachments for your favorite Pack-It organizers ( sold separately). 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 dimesions: Standard: approx. 21.5 x 13.75 x 8 in. / 55 x 35 x 20 cm Expanded: approx. 21.5 x 13.75 x 10 in. / 55 x 35 x 25 cm Weight approx. 6 lb. 2 oz. / 2778 g Internal capacity: Standard: 2145 cu. in. / 35 L Expanded: 2380 cu. in. / 39 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.