Dyno Merchandise Singer Stretchrite Non-Roll Flat Elastic 1" X50yd, Black Rhode Island Elastic Flat Non-Roll Roll 1"x 50yd Black Rhode Island Flat Non-Roll Elastic is recommended for waistbands in pants, shorts, slacks, and shirts. A firm medium weight waistband elastic that resists rolling or twisting. Dries quicker and is shrink resistant. Machine wash, tumble dry or dry clean.