2pcs Office Chair Mats with lips offer a protective layer for carpet by avoiding direct contact with rolling wheels Slip Resistance - Non-slip frosted surface on the upper side for extra traction, studded back on the bottom to grip carpet firmly Safety & Durability - Made of PVC material, safe to use in any workplace & wear & tear resistant Easy Maintenance - Dirt & dust can be quickly wiped off the surface for easy cleaning Versatile Usage - Ideal for home, offices, studios as computer chair mat