SIZE INTRODUCTION - There are three different sizes available for use，Rectangular size: 9.84 inches × 13.78 inches；Circular size: diameter 8.66 inches and 9.45 inches respectively. PROTECT COOKTOP & LENGTHEN LIFESPAN- Diamond pattern Induction cooktop Protector, perfect (Magnetic)induction and Cookware accessories, can lengthen the electric stove burners lifespan and keeping it away form unwanted scratches and stains. PLATINUM FOOD GRADE SILICONE- Made from specially designed fiberglass coated with food grade liquid platinum silicone (BPA free), reusable, 100% non-stick resistantand heat resistant to 450℉. WARNING - Not for use on regular electric glass or ceramic cooktops, Only for use on induction (magnetic) cooktops. Do not expose to temperatures over 450℉. USAGE NOTES - Do not heat the soft pad on the induction cooker without any liquid inside the pot, as it may cause discoloration, deformation, or smoke.Do not use a special light sensor heating device, as it may cause this product to malfunction. This product is made of non-flammable material. If it is used for a long time in a high-temperature environment exceeding 230℃ and it changes color, deforms, or emits smoke, please stop using it immediately.