Swiss Diamond woks combine the easy clean-up and healthy cooking ability of nonstick with the traditional benefits of woks. This 11 in. model has a round interior bowl for use with the traditional round spatula or wok ladle. No wok ring required - a perfectly flat aluminum base is cast onto the bottom of the wok. Includes lid. Swiss Diamond"s PFOA-free cookware features unsurpassed nonstick performance for healthy cooking and easy clean-up. The patented nonstick coating, reinforced with real diamond particles, allows oil-free cooking and cleans up with just warm soapy water. Heavy-duty cast aluminum bodies will never warp, while the perfectly flat base distributes heat evenly and will not tip or spin. Rivet-free interior prevents food build-up that can lead to bacterial growth. Ergonomic handles, designed for comfort and balance, stay cool on the stovetop. Tempered glass lids feature an adjustable steam vent for advanced moisture control. All products are oven-safe up to 500*F. Suitable for use on gas, electric and induction cooktops. Made in Switzerland.