11", Black Silicone, Rimmed Glass Lid, Tempered Glass With Stainless Steel Knob & Silicone Edge, Fits Most 11" Diameter Cookware Pans, Silicone Trim Provides A Tight Fitting Seal & Protects Edges Of Your Cookware From Getting Chipped Or Nicked, Also Includes Vent On 2 Sides To Let Out Steam, Inside Rim Dimensions 11" Outside Rim 11.5", Oven Safe 450 Degrees Fahrenheit.