The Chicago Metallic Commercial II Traditional Large Jelly Roll Pan is made from commercial heavy weight aluminized steel and can be used for more than just jelly rolls. The pan is adaptable and will fill many cooking roles. Use it to bake cookies, roast bacon, roast chicken breasts and thighs. Place it under other pans to catch drippings and overspill. Use it to form molded sheets of polenta. Even heat distribution allows for even cooking and browning. All Chicago Metallic Commercial II Bakeware is made for durability - the pans won't rust or corrode and metal utensils can be used on their uncoated surfaces. The reinforced lip (on all folded and rectangular pans) eliminates popping, bending and flexing. The folded construction (on rectangular, loaf and square pans) is triple thick in the corners to increase strength and resist warping. Chicago Metallic Commercial II Bakeware is the choice of commercial bakers. The more you use it the better it gets. Dishwasher safe. Lifetime warranty.