The PAMPERED CHEF 1343 Stone 15 X 13 Cookie Sheet Bar Baking Pan Large is a rectangular baking pan made of stone, with dimensions of 15 x 13 inches. It is designed for use in electric and gas ovens, with a heat resistance of up to 450°F. The non-stick surface coating makes it easy to clean, and it is recommended to hand wash only. This American-made bakestone by Pampered Chef is a durable and reliable option for baking cookies, bars, and other treats.