Our mats are constructed of High Density EVA foam for a safe, non-slippery surface. The Puzzle Mats notched edges form a secure joint that is easy to assemble and install. Our reversible mats allow you to change the color of your floor, either to designate rings or to freshen up your school’s look occasionally. It’s like having two mats for the price of one! Reversible Mats - 2 color combos 20-20RU Red/Blue 20-20GG Green/Gray Size: 3.3’ x 3.3’ x 30 mm thickness Due to Size, additional shipping charges will be added after order is processed. Please contact us by email for more info.