Material for shower mat: PVC. Safe and non-toxic, wash and dry before use. Round 55 * 55cm, suitable for most bathrooms. Massage: The surface of the Massage Bath Mat has a special shape, and has the function of massaging the soles of the feet while being non-slip. Drainage hole: drain and dry quickly, water drains after use, protects the surface from mold and other bacteria. Non-slip: Shower mat with suction cups on the underside for a firm grip. Machine washable: soft, easy to store and machine washable. Can be dried on the wall.