Heat-resistant up to 450F. THREE SIZES FOR VARIOUS NEEDS: 3 piece cookie sheets set includes 1pc 9.6x13.6in small cookie sheet for baking cookies, pastry, and lasagna, 1pc 10.6x15.5in jelly roll pan for baking jelly rolls, 1pc 11.8x17.5in large half sheet for baking chicken and vegetables.
