Cass and Company Invisibellas shape wear undergarments are styled with patented knitting that provides full support, slimming and a smooth, lineless back. They look completely natural and undetectable under all clothing including sheers and are so comfortable, light and breathable they can be worn around the clock and in all seasons. An essential all-in-one undergarment for every woman's wardrobe that will improve the way you dress, look and feel.