Pastry Mat is made of premium silicone and glass fiber. It is safe, soft, durable and will not wrinkle or fade.Thicker mats will not slip or wrinkle when used.Even if grease or dough sticks to the surface, the pastry mat can be easily cleaned to keep countertops clean and sanitary.The bottom of the mat strongly adheres to the countertop or other surfaces; it does not slip or slide on the counter.