constructed with durable aluminum that is coated with a ceramic nonstick coating that promotes healthy and Eco-friendly cooking. The nonstick coating prevents excessive stuck on food residue and allows for easy, hand wash recommended clean up. This set includes tempered glass lids for sauce and saute pans so you can monitor cooking progress safely. Soft grip Bakelite handles and knobs remain cool while you are cooking to provide a safe and worry free cooking experience. Pieces are compatible on gas, halogen, and electric cook tops.