Core yarn: Spandex Outer yarn: Polyester or nylon Specification: Core yarn: Spandex 1, 120D, 840D, 560D, 420D, 210D, and 140D Outer yarn: Nylon: 140D, 70D, and 40D Polyester: 300D, 150D, and 75D Cotton yarn: 16S, 21S, 32S, and 40S Draw ratio: 2.2 to 3.6 Available in different colors and specifications Used for making socks, gloves, elastic band in garment, medical bandage, and seamless underwear Applications: Circular knitting machinery, shuttle loom, and one-step molding circular knitting machinery Weight: 800 to 1, 000g/cone.