Features. 3 mm. Thick aluminum base. Ultra-durable. Rock like finish: 50 % harder & 40% more resistant to abrasion. Internally reinforced nonstick coating. Ergonomic cast stainless steel handle. Tempered glass lid with steam release vent. Oven-proof even on broil up to 450°F. Easy to clean & dishwasher safe. Size - 6.5 in.