1) Made of 100% food grade silica gel, the product has passed the FDA and LFGB safety certification, health and environmental protection, non-toxic and no odor, and can be used with confidence. 2) It has good heat resistance and freeze resistance. It can be used in the ambient temperature of -40°C~240°C. It is durable, has strong anti-slip effect, and has heat-resisting effect. It can be safely used in refrigerators and microwave ovens, and it is soft in silicone. Features, protect the kitchen utensils from damage, is a good helper in your life. 3) Easy to clean, wash with water and dry.