Martellato, Uniflex Molds. Flexible bakeware made of soft, non-toxic, non-stick, high-conductivity alimentary pure silicone. Suitable for cooking, baking, refrigerating, freezing and thawing, SILICONFLEX baking pans / molds are ideal for the preparation of of a variety of foods. Alimentary silicone. Non-toxic. Very easy to clean. Hygienic. Patented plastic ring insert ensures mold maintains it∆s shape.