Dritz Knit Elastic is a quality elastic that is curl resistant and won t narrow when stretched. This strong, stiff elastic is great for cuffs, waistbands, and jacket waistbands. Dry Cleanable as well as, machine washable and dryable in temperatures up to 200-Degree fahrenheit. Black, 1-1/2-inch by 15-yard. Made of 67-Percent Polyester 33-Percent Rubber.