Calphalon Contemporary Hard-Anodized Aluminum Nonstick Cookware, Flat-Bottom Wok, 12-inch, Bronze, Bronze END Heavy-gauge aluminum construction ensures even heating and is hard-anodized for durability. It also makes it dishwasher-safe. Interior includes three layers of nonstick coating  two layers provide durability and the third layer offers easy release performance. The long, brushed stainless steel handles are designed to stay cool on the stovetop. Pans and covers are also oven safe, making it ideal for finishing a gourmet dish. Adapted from a traditional round-bottom wok, this flat-bottom wok has a wide cooking surface ideal for stir-frying on gas or electric ranges. The domed cover is perfect for steaming and simmering soups. The nonstick surface means you can cook healthier using less fat, with effortless cleanup. Comes with Calphalon's full lifetime warranty.