Crafted from pure aluminum, it ensures superior browning and even baking every time. The premium nonstick surface is enhanced by a silicone coating which guarantees a clean release and made without PFAS. This set includes a Half Sheet, 9 x 13-Inch Baking Pan, 9-Inch Round Pan and Muffin Pan a perfect set for all your cooking and baking needs. Designed with a sturdy steel rim to prevent warping, ensuring durability for years to come; oven-safe up to 400°F Half Sheet exterior measures 12.9 x 17.9 x 1 inches and has a cooking surface of 12.1 x 17.1 inches. 9 x 13 pan exterior measures 9.5 x 12.9 x 2.5 inches and the interior cooking surface 8.8 x 12.1 inches. 9 Inch Round Pan exterior measures 9.6 inches in diameter and 2.5 inches in height. The interior diameter is 9 inches. Muffin Pan exterior measures 9.5 x 12.9 x 1.3 inches and each cavity measures 2 inches at the base and 2.5 inches at the top, 12 cavities with a total pan capacity is 4.5 cups. Made in America of domestic and imported materials. Our aluminum bakeware-quality pieces are made to withstand a lifetime of use in your home kitchen.