Dritz 1.25'' 4Yds Lightweight Underwear Elastic White is a superior quality elastic made of rubber and polyester. The pack contains four yards of 1.25-inch-wide lightweight underwear elastic in white. It features a resilient stretch ability and is ideal for lining waistbands in underwear. Simply insert it into casings or stitch directly on the reverse side of fabrics to get your desired result. This underwear elastic is machine washable, dryable and also chlorine bleach-safe.