Materials:Our mat is made of food grade silicone, which is flexible and cuttable. No fade and no deform. Non-Skid, Waterproof, Heat-Resistant, Durable and Stable, not easy to deform or tear up. Oven Liner,1 Pcs Black Silicone Mat Silicone Sheet Craft Baking Mat Heat Resistant Proof Mat Placemat,Oven Liners for Bottom for Kitchen Worktop Protector,30 40Cm.