FOOD GRADE SILICONE: The GREENRANIN back mat is made of premium silicone and fiberglass. It is safe, soft, durable and will not wrinkle or fade. DOUBLE THICKNESS: The thickness of the mat is 0.6 mm, which is almost double that of other mats (0.3 mm). Thicker mats do not slide or wrinkle with use. NON-STICK: Even if grease or dough sticks to the surface, the backing mat can be easily cleaned to keep countertops clean and hygienic. NON-SLIP UNDERSIDE: The underside of the mat sticks firmly to the worktop or other surfaces; it slides or doesn't slide on the bench. 100% SATISFACTION GUARANTEE: We believe in our products, so every purchase comes with our 100% money back guarantee. If you experience any problems with your product, please contact us for a replacement or refund. We will provide friendly and accessible support.