Satin pattu, also known as satin silk, is a fabric characterized by its smooth, glossy surface and luxurious feel. It's typically woven using the satin weave, which creates a lustrous appearance on one side and a duller finish on the other. While traditionally made from silk, satin can also be produced using other fibers like polyester or nylon. This fabric drapes elegantly, making it popular for sarees, evening gowns, and other garments.