The Chef Series cookware by Tupperware are truly the best quality pans on the market, which is obvious as soon as you hold one. For fast and even heating, the encapsulated base features a thick layer of aluminum fused between two layers of 18-gauge stainless steel. The nonstick cooking surface in these fry pans are guaranteed for 10 years! The stainless steel handles stay cool to touch on the stovetop. The Chef Series cookware is covered under the Tupperware Full Lifetime Warranty (10-Year on nonstick coating). This 12 inch grill pan includes ridges on the base to keep the grease away from your food for healthier results.