Affordable, long-lasting protection for home or office. Unique formulation delivers the clearest, most durable PVC chair mat. Free from the phthalate plasticizers that have been banned from children's toys and medical instruments. Gripper back holds mat securely in place. Will not to crack, chip, break or shatter in normal use and correct application. Manufactured using 25% renewable energy. Gripper back for low pile carpets up to 0.25".