... stretching.Superbly suited for both home and gym use. Exercise mat made of NBR close-cell foam,eco- friendly ... ,durable, keeps cold and dampness always from body and water-proof,designed with anti-slippness characteristic,super ... want,easy to clean with water,ideal for yoga exercise,sun bathing,hiking and gym.Size:180×50/60cm ... mat become stiff after heat-up. NBR Exercise Mat(SGS Approved)