Knitted elastic is soft, strong and appropriate for most apparel items like waist bands, belts, suspenders and sweat bands. * It is best suited for lightweight fabrics and doesn"t narrow when stretched. it is also not effected by needle piercing making it as suitable for direct fabric application as it is for casings. * Each spool contains 30 yards of elastic that is white in color and is 3/4 inch wide * 56 percent polyester, 44 percent rubber