Made of durable 18-8 stainless steel. Measures 9-inches by 9-inches by 1.5-inches – conveniently fits pans from 5.5-inches to 9-inches. Attractive heavy duty durable stainless steel lid with tempered glass insert that fits multiple sizes of frying, stockpots, and sauce pans. Oven safe to 425 degrees Fahrenheit. Dishwasher safe.