Red Tramontina Simple Cooking Porcelain Enamel Nonstick 13 pc Cookware Set Porcelain enamel exterior- Durable, easy-to-clean, porcelain enamel exterior is resistant to chips and scratches Heavy-Gauge Aluminum- Reists warping while providing even heat distribution Soft Touch, Stay-Cool Handles- Soft touch, stay-cool handles are ergonomically designed for comfort and safety. Tempered Glass Lids- Heat- and shatter-resistant glass lids with stainless steel rim. Nonstick Interior- Teflon Platinum nonstick interior, Made in U.S.A with imported accessories