Circulon 13" X 11.5" Roaster With Rack Circulon boasts the Patented TOTAL Ti Titanium composite Hi-Low Release System. Protects non-stick surface from abrasion Outlasts all other stainless steel non-sticks Guaranteed! Allows trapped moisture to escape for even browning. Circulon Bakeware is constructed from carbon steel, which conducts heat better than stainless steel