When initially released in Europe, and during the Le CLAIR test marketing period in the US, many Visions products shipped with a "flat-top" lid that was also made of Calexium. These lids could be flipped over and used as a skillet or baking pan. However, upon official introduction in the US, releases under the Visions brand made use of knob-style glass lids made of Pyrex. Glass lids are now standard worldwide. Corelle Brands sells similar functioning cookware under the CorningWare StoveTop brand name. These products are made of opaque Pyroceram ceramic-glass, like vintage pieces of Corning Ware, and can be used in the similar ways as Visions cookware. They are currently manufactured in France by the same factory that produces Visions. Pyrex, a brand name for break-resistant glass bakeware, has offered complementary amber (Fireside) and Cranberry tinted lines to match Visions colorways in the past. Care must be made to distinguish between Visions and bakeware marketed under the Pyrex brand name, as the thermal properties of each product are quite different. Calexium, the transparent version of Pyroceram used to make Visions, is also used in other products such as ceramic-glass top stoves and fireplace doors.