A cotton twill
weave fabric made of single hard-twisted yarns. The staple
type has colored warp
and white or undyed filling thread
. When the fabric (and the look) became popular, the name denim was given to many other types of fabric, including cross-dyed fabrics and brushed
fabrics, both knit and woven, that resemble true denim. Most jeans are made of denim and the most popular and traditional denim color is blue. Sports denim is softer and lighter in weight. It is now available in many colors, and in plaids and stripes. Woven-in stripes and plaids are popular for draperies, upholstery, and bedspreads.