The cookware set is entirely made of highly durable, keeps its original features preserving the looks, hygiene, and durability of the material. The tri-ply bottom distributes heat evenly, improving cooking performance, saving power, and keeping food warm for longer. The tempered glass lid comes with a steam vent, while the rims and holder are made of stainless steel. Safe for daily dishwasher use and can be used on gas, electric, and induction. Tramontina