Cooks Standard 10.5-Inch Multi-Ply clad stainless steel wok stir fry pan with glass lid, 30cm is made of 3 layers of 18/10 stainless steel and an aluminum core along base and walls. Multi-ply allows for heat to be distributed evenly and quickly.Stainless steel polished exterior and interior looks great and is easy to clean. Riveted handles stay cool and comfortable with a v-shape at the base. Large size for multipurpose use: sauteing, frying, and more. Flat bottom for even spreading and curved sides for pouring.