it luggage World's Lightest Carry Tow 3 Piece Set, Black, One Size The carry-tow is the ultimate link system luggage connecting up to any 3 cases in any size combination to take the stress out of travel The large checked exterior measures 32.5 x 20.1 x 11.6 inch. Interior measures 28.3 x 19 x 11.6 inch and weighs 6.48lbs The medium checked exterior measures 27.4 x 18.7 x 10.4 inch. Interior measures 23.2 x 17.7 x 10.4 inch and weighs 5.78lbs The carry-on exterior measures 22.8 x 15.9 x 8.9 inch. Interior measures 18.7 x 15 x 8.9 inch and weighs 5.60lbs 20.1" x 11.6" x 32.5"