Chess Board, 12mm first quality MDF Boards are used to maintain the durability of the rigid shape and form of our products. Playing surfaces are applied with High Glossy (95%) Acrylic UV Cured Varnish, non- yellowing, solvent, smell & vapor free. The sides of the boards are applied with High Gloss PVC Edge Band. Four self-stick non-slip pads are applied underneath the boards.