Usage Tips:Deck Protector: Eliminates the risk of burns and fires on deck, deck or grass. Protect decking surface from burns, heat damage, thermal warping, grease splatters, cement stains, etc. Fits most square fire pits: 50 x 36 inches, fits most square fire pits and barbecues. The grill mat is easy to cut, just measure your shelf and cut it. Can be customized. Non-slip and waterproof backing: Our barbecue mat helps firmly fix the oil pad in place and prevent it from moving around. The waterproof layer can lock in engine oil, gasoline, coolant or transmission oil and prevent these liquids from penetrating, damaging or contaminating the surface below. Easy to clean and easy to carry: When preparing for cleaning, simply rinse with soap and water or a garden hose; it can be folded and carried and can be well organized in a bag. Heating reminder: do not put the heat source directly on the fire pad, the distance between the fire and the heat source should be at least 4 inches.