Super anti-skid, hollow bottom, four-colour tiles, colors are not fixed, mixed; a slight dirt can be wiped with a damp cloth, to be washed using special carpet cleaning agent diluted with water or neutral detergent for washing. Note the shade, dry to dry, green nontoxic, durable, PVC brand new are tasty, is absolutely harmless, General home cleaning, put two or three days and get some air, and would have to temper; cheap, welcome customers to visit to buy;