This ½” thick mat is made of 100% durable vulcanized rubber. Stands up to heavy abuse in free-weight areas. Tiles are 2’ x 2’, interlocking on all sides for a virtually seamless appearance. Unique waffle-bottom provides a perfect balance of stability and comfort. Protects floors and equipment from damage. Muffles noise and dampens vibrations. Won't curl, tear, slip, or shift out of place. Anti-slip surface. Easy to install. Easy to clean surface. Color is BLACK .... picture may appear blue due to lighting...but please note this tile is manufactured from recycled tires, and is black.