Satin Waistband Elastic has a shiny satin ribbon look to it while being very soft and stretchy. Use this elastic along the top waistband of underwear, or along the bottom edge of Sports Bras. 1 7/8" wide. Waistband Elastic has a satin finish on both sides. Use this elastic along the top waistband of underwear, or along the bottom edge of Sports Bras. 1 7/8? wide. Sold by the yard, for multiple yards please increase the quantity.