Upholstery fabrics are materials used to cover furniture and other items in the home. Two common types of upholstery fabrics are scrims and reps. Scrims are a type of loosely woven fabric made from cotton, linen, or synthetic fibers. They are lightweight and often used for curtains, bedding, and upholstery. Reps are a heavier, more durable fabric made from wool, silk, or synthetic fibers. They are often used for upholstery and drapery.