Twill is a type of weave made from any type of fiber like silk, cotton or polyester. Cotton twill fabric is a type of material that consists of twill patterns of diagonal, parallel ribs. Twill fabric, drapes well and looks beautiful. Cotton twill is generally recognized as the fabric used in denims. Twill weave fabrics are durable and make great upholstery fabrics. Twill weave generally creates thick and sturdy fabric. These are tight weaves with a high thread count. Printed twills are generally done on light weight fabrics. Buy twill fabric online at The Design Cart.