What do you mean by "glossy fabric" in general? What kind of knitted and elastic fabric do you have?
Fabric: smooth fabric finish (refers to relatively good luster and neat) side, also known as the front face of the fabric, taking positive
The elastic knitted fabrics such as velvet elastic warp knitted fabric, weft spandex jersey, rib can be considered smooth fabric,
Smooth surface fabric: generally refers to textile fabrics that have a smooth surface (shiny and clean) features of a class of fabrics, including woven, knitted (warp, weft, horizontal) and so on