With the Chef Eco-logic 100-Percent range, based on the most innovative and worldwide exclusive technology. Chef Eco-logic 100-Percent is hardened with the patented EST ( Ecological Surface Treatment) system that features an alkaline bath oxidation process that achieves perfect adhesion of the superior Bekadur Ceramica coating, resulting in a 3 year guarantee on our non-stick surface. The Bekadura Ceramica non-stick coating is completely PFOA- and PTFE-free; no heavy metals or chemicals used, so the cookware, the production process, and the factory workers are completely safe. The Chef Eco-logic 100-Percent range is energy efficient, great for cooking with high or low heat, and promotes healthy cooking due to less fats or oils needed. Each piece of our Chef Eco-logic cookware comes naturally oxidized with no artificially colored enamel applied that can hurt the environment. The result is a beautiful, natural light-gray exterior finish.