The revolutionary nonstick mottled coating is quick to open for effortless cooking. This highly durable layer has a stone core it's streak-resistant, metal-safe and highly scratch-resistant, extending the life of the bowl. The easy-to-clean surface ensures that no time is wasted on washing and more time can be spent cooking. Made from the most pure aluminum in the industry, our steel cookware heats up quickly and evenly without hot spots. Three times more energy efficient than cast iron, and aluminum is wonderfully light, eliminating any arm fatigue. The ergonomic handle provides a comfortable grip for maximum control.Granite material provides toughness, which easy to clean.