"Our Bamboo Steamer Liners are made of 100% food grade pulp, non-stick, non-toxic, safe and sturdy. FDA approved. learn more about features: ♥ 9in pre-cut - save your time and reduce waste to cut circles ＆ holes with knife. ♥ Make it easier to remove food, keep your food nice look and tasty. ♥ Clean up easily, keep bamboo tray free from food residue. ♥ Heat Resistant up to 450 degree F (230 C) for up to 20 minutes. ♥ Designed with holes to aid steaming, allows for steam circulation. Multi-functional cooking mat Ideal for 5.3/5.8 qt air fryer. Also can be used in steaming basket, cooking fish, vegetables, rice, dim sum, etc. How to use? ☞ Put the steamer paper down in the bottom of the pan after you pre heat. ☞ Put the food on top of the papers so that the paper doesn't go flying up into the heating element and cause problems. LIFE TIME WARRANTY - We will provide worry-free use. You can buy with confidence knowing that it comes with a Lifetime Warranty. - If you are not absolutely satisfied with your Non-stick Steamer Mat, please contact with us! We keep our promises to our customers and treat you like family."