12" Tri-Ply Stainless Steel non-stick Skillet with Tri-ply stainless steel design for even heating, Welded cast stainless steel handles, Etched measurement markings, Dishwasher safe, Teflon Platinum Plus nonstick. Thicker 3mm tri-ply stainless steel with Stainless steel stay-flat base; Easy pouring rims; Domed, tempered glass lids; Oven safe up to 500 F/260 C; Designed to stand up to rigorous dishwasher use; Evaluated using one of the most thorough dishwasher tests in the market: 500 cycles.