T-fal C836SC Ultimate Stainless Steel Copper Bottom Cookware Set , 12-Pieces, Silver Stainless-steel construction for long lasting performance Multi-layer base w/ copper bottom for fast, even heat distribution Multi-layer base w/ copper bottom for fast, even heat distribution Glass lid allows you to watch cooking progress. Vented hole lets steam escape to prevent boiling over Dishwasher safe; oven safe to 500 degree f