it luggage Duraliton Apollo 3 Piece Set, Zinfandel, One Size This 3 piece 8 wheel luggage set features duraliton, an exclusive material that is both ultra-strong and lightweight The large checked exterior measures 30.9 x 21.6 x 13 inch + 3 inch expander. Interior measures 29.5 x 20.9 x 13 inch + 3 inch expander and weighs 9.92lbs The medium checked exterior measures is 27.2 x 18.5 x 11.2 inch + 2.5 inch expander. Interior measures 25.2 x 17.9 x 11.2 inch + 2.5 inch expander and weighs 8.04lbs The carry-on exterior measures 21.3 x 15.7 x 8.5 inch + 2.5 inch expander. Interior measures 19.3 x 15.4 x 8.5 inch + 2.5 inch expander and weighs 6.17lbs 21.6" x 13" + 3" Exp x 30.9"