This extra strong baking mat is made of food grade silicone based woven fabric, it is laminated and rubberized. The 11-5/8" Exopat Baking Mat (321005) is an economical product as can be used two thousand to three thousand times, it is heat resistant from -40 to +580 Fahrenheit, making it an ideal product for any bakery or professional kitchen. There is no need to grease this mat and it is easily cleaned with a sponge. The baking mat is 11.62 inch long and 16.37 inch wide, it weighs 3lbs 5oz and comes in a pack of 12, it fits a 13 inch long and 18 inch wide sleeve, which is included. The mat lays flat by soaking overnight in warm soapy water.