THREE LAYERS OF EFFECTIVE PROTECTION: the first layer of silica gel coating is heat-resistan t, wate rproof and easy to clean; the second layer is fire-resistan t glass fiber; the third layer is heat-resistan t, water proof and easy to clean. Temperature resistance up to 1800 F. PATIO, LAWN, DECK PROTECTORThis reliable heat shield mat can create a safe, effective, heat-retardant barrier from high heat sources. Preven t burns and melting marks on expensive decks and patios, and avoid damaging yards and grassy areas SIZE Have three size to choose,80x80cm/31.5x31.5inch,80x100cm/31.5x39.37inch,100x100cm/39.37x39.37inch LIGHTWEIGHT PORTABLEDesigned for lightweight portability that keeps up with active lifestyles, perfectly suited for regular everyday use throughout the seasons. Bring it with you to camping, BBQ and make memories with friends and family all year long NOTEMake sure there is at least 4 inch spacing between the heat source (Propane Fire Pit, Bonfire Pit, Burn Barrel, Vertical Smoker, BBQ Grill, Pit Barrel Smoker, etc.) and the fire pit pad, DO NOT place heat source directly on the Fireproof Mat