The pan is constructed of durable cast aluminum that ensures sharp detail and uniform baking. Commercial quality, heavy cast aluminum provides superior baking performance Baked goods rise evenly, cook more uniformly, & have delicious, golden crusts due to excellent conduction of these heavy walled pans Cast bakeware produces better shapes & finer details than ordinary pans Special heat reflective exterior, & commercial quality grey non stick surface, assures uniform browning & stick free results