Vicwe Office Chair Mat for Carpet, 32" X 55" Heavy Duty Desk Chair Mat for Carpeted Floors, Easy Glide Rolling Plastic Floor Mat, Ship Flat,Easy to Clean with LipBrand: Vicwe Color: Clear Features: Heavy Duty Carpet Protector with Lip: The hard chair mat for carpet is made of heavy duty PET material, it will not depression, scratch or curl, the lip design ensures additional floor protection under computer desks. Only suitable for carpet floors. Anti Slip Design & Easy Glide : The computer chair mat carpet have little spikes on the bottom to keep it from moving around ,ensuring stability when youre working