The prestige 54431 circulon cake tin is constructed from high quality carbon steel and designed for those who want a product that saves time and effort in the kitchen without losing quality and product performance prestige circulon bakeware features the signature total food release system and an advanced non stick coating this loose base round cake tin has a diameter of 8 inches total hi low food release system baked foods release with ease and cleanup is effortless perfect even baking perf