Ultra lightweight Frameless Polyester 2pc Set includes a 18.5 Carry On and a 27 Upright * The interior dimensions (excluding handles and wheels of the 17.75 carry on are 17.75 x 13 x 9.6 * The interior dimensions (excluding handles and wheels of the 28 upright are 27.8 x 20.5 x 13.6 * Unique double expansion feature provides 25 or 50 extra capacity when needed * Polycarbonate shells offer high impact protection for your belongings