Silicone Baking Sheet By Splendid Baking SPLENDID Baking Sheets are all FDA and LFGB approved and ENVIRONMENTALLY FRIENDLY! CONSISTENT BEAUTIFUL RESULTS. Our Mat is HEAT RESISTANT up to 450F and Microwave SAFE. Made to fit a 18"x13" pan. PROFESSIONAL Grade. Can be used Thousands of Times with PERFECT results. It's DURABLE and will SAVE MONEY and your Pans. No Hassle, LIFETIME GUARANTEE: Love this mat or get a MONEY BACK guarantee.