it luggage Knight Polypropylene 3 Piece Set, Blue Sapphire, One Size 4 wheel polypropylene 3 piece set with single expander The large checked exterior measures 30.1 x 20.5 x 13.4 inch + 2.4 inch expander. Interior measures 27.9 x 19.7 x 13.4 inch + 2.4 inch expander and weighs 11.46lbs The medium checked exterior measures 26.2 x 17.9 x 12.2 inch + 2.4 inch expander. Interior measures 24 x 16.9 x 12.2 inch + 2.4 inch expander and weighs 9.34lbs The carry-on exterior measures 21.7 x 14.8 x 10.2 inch + 2.4 inch expander. Interior measures 19.6 x 13.8 x 10.2 inch + 2.4 inch expander and weighs 7.16lbs 20.5" x 13.4" + 2.4" Exp x 30.1"