Some popular fabrics used to make ribbons are satin, organza, sheer, silk, velvet, and grosgrain. Grosgrain ribbon is the primary ribbon material used in the hair bow industry. Simple, red grosgrain ribbon with additional stones were used for the bows. Grosgrain ribbon is often used for facings and for waistbands. Using a grosgrain ribbon facing for waistbands is faster and uses less fabric. Ribbed grosgrain may be used similarly to twill tape for internal gussets and reinforcements. Some gowns may have 'strings' (i.e. grosgrain ribbons) attached to them behind the lapels. The bow is made of grosgrain silk or rayon, in a pinched or flat form. The seat covers were in a floral design and made of grosgrain. Factories in America started to produce grosgrain silk in the late 19th century. Grosgrain has a very dull appearance with little luster but is very strong.