Built from heavy-duty aluminum, the Vollrath Wear-Ever sheet pan is proven to be 20 percent stronger than the competition. It heats up and cools down quickly, and the pan’s concave bottom flattens for even heating. The natural finish ensures uniform results, and the tapered sides allow for convenient stacking. Made in the USA Impact-resistant 3000-Series aluminum is impressively durable Natural finish ensures uniform results Concave bottom flattens when heated for even and consistent baking Tapered sides allow for easy stacking Quarter size is perfect for small batches of cookies, buns, desserts and more