Approved FDA approved, BPA free, 100% satisfaction, reusable, PFOA free, non-toxic and safe with anti-corrosion feature Non-stick, keep your cooker clean, easy to clean, just take it off and wash it in warm soapy water or in the dishwasher. This gas stove cover can be used for a long time. 27x27cm / 10.6x10.6inch size, can be cut into any size Made of premium Teflon coated of non-stick glass cloth, does not warp or melt; withstands conventional temperature range: -70 to 260, maximum up to 300, but should avoid direct contact with flames Material The material of stovetop burner protectors is easier to cut, allowing you to adjust the inside radius while cutting. Perfect for most types of gas stoves. SPECIFICATION: Material: PTFE Size: 27x27cm / 10.6x10.6inch Thickness: 0.2mm Hole diameter: 4cm (the stove top covers hole could be cut with scissors to fit your gas stove properly before use) The black color NOTE: These gas stove covers are not flame retardant Please avoid direct contact with flames.