The basics A sturdy thread for upholstery and other sewing projects. The benefits 100% polyester upholstery thread is high-strength but soft and flexible so seams lie flatly and neatly. Each spool contains 325 yards. The uses Perfect for upholstery, vinyl, heavyweight fabrics, and leather. The bottom line Representative color samples are on the next page. Indicate the number of spools of each color you want and then at the bottom of the page hit 'Add Selected Colors to Cart' and everything you choose will be added at one time.