PROTECTS YOUR OVEN AND SAVING YOU PRECIOUS TIME AND ENERGY Sunrich heavy duty 3-pack heat-resistant fiberglass mat catch all the baked spills .When finish baking, just take out the baking pad at the bottom and wipe clean with warm soapy water or wash it in your dishwasher. GUARANTEED 100% Certified PFOA , BPA FREE & FDA APPROVED - Material: Food Grade Teflon - Safe for Your Home and Family -Non-Toxic-Eco-Friendly THAT IS WHY MANY BAKING ENTHUSIAST CHOOSE OUR FIBERGLASS OVEN LINERS - 3 Pack Heavy Duty Liners Sized 23" x 16.2", Premium Thickness - Perfect for Standard 30" Ovens - Multi-Purpose:Works as Pan Liner, Baking/Cookie Mat,Also for Microwaves & Toaster Ovens - Safe Up To 500 Degrees Farenheit - Non-Stick, Reusable & Dishwasher Safe - Can Be Cut To Size -Safe and Healthy. - Easy To Clean OPERATING TIPS - 99% of problems are due to improper placement! For all gas ovens & electric ovens with a hidden heating element, place on lowest rack (NOT oven bottom). For electric ovens with an exposed heating element, place at bottom of oven underneath the element.