Ergonomically designed phenolic handle. Stain-free pearl ceramic coating. Tempered glass lids with stainless steel rims. Easy to clean; dishwasher safe. PFOA, PTFE, and PFOS free. About Range KleenHeadquartered in Lima, Ohio, Range Kleen has been supplying consumers with top quality range replacement parts for over 30 years. In recent years, the company has expanded their line to include various range accessories and kitchen cookware, and they are well known for their attention to detail, use of superior materials, and high quality craftsmanship. Range Kleen holds the #1 brand ranking in range accessories and has held that position since 1992. After trying their cookware, we think you'll understand why.