Constructed of polycarbonate Wide body feature for added storage capacity High impact design (Patent #30-2015-0063073) Detachable mesh pocket for travel accessories on carry-on size only (Patent #ZL201020166418.7) Hidden compartment inside the expandable area on carry-on size only (Patent #US 10,314,374 B2) 8 Jumbo dual wheel spinners with reduced noise and smoother glide High quality aluminum locking handle system Expandable for additional packing capacity Built-in TSA 3-dial lock system for added security Hidden add-a-bag strap on top Interior divider creates two separate compartments Additional interior zip pocket and buckle tie-belt Grip handle on the bottom for easy carriage Elegantly imprinted fully padded interior lining Sku # Description Dimensions (H x W x L) Capacity Weight PET-1021 21" Exp. Carry-On Spinner 21" x 15" x (10"+2") 3800 cu. in. 7.5 lbs.