PVC CHAIR MAT FOR LIGHT USE:Suitable for hardwood floor：vinyl, hardwood, laminate, stone, tile and concrete. Not recommended for carpet. Prevent against wear and tear caused by office chair casters and protect your flooring. RELIEVE FATIGUE:Ease of rolling promotes ergonomic posture ,it is proven to reduce leg fatigue by taking the strain off your legs. DURABILITY:The floor mat is stronger and more durable. Use will not crack, bend, break, scratch or discolor.