This hard-side luggage set sits on 8 wheel spinners. Each luggage piece is expandable and lightweight. A clear protective coating has been applied to the outside of your new luggage. This easy to remove thin wrap of plastic is applied to protect the high-gloss finish on your new luggage. To remove, start at the upper-right corner on the front of your bag. Lift an edge of the plastic wrap and peel it away. Repeat this process until all plastic is removed. Large size dimensions: 28″x20″x13 (+2″) Medium size dimensions: 24″x17.5″x11.5 (+2″) Small size dimensions: 20″x16″x10(+2″)