Singer 73912 Braided Polyester Elastic Blister Card, 1/2-Inch by 1-1/2-Yard, Black Braided polyester elastic will not be affected by chlorine and salt water 72 percent polyester, 28 percent rubber This elastic can be used for waistbands, sleeves, necklines and legbands in swimwear and other wash and wear garments Each blister contains 1 yard of elastic that is black in color and is 3/4 inch wide