1) 20D spandex covered by dyed 20D nylon 2) Low elascity 3) Available for sweaters 4) We can offer in all colors We can produce traditional covered yarn , air covered yarn that are available for socks, knitting fabric,sweaters, weaving fabric.Spandex nylon covered yarn: 20/20 20/30 20/40 20/70 30/70 40/70spandex polyester covered yarn: 20/75 30/75 40/75 40/100 40/150 40/200 40/300 70/300