1.Good quality and best price 2.Colour:white and black 3.The product is hi-performance bare spandex yarn 4.Good flexibility Detailed Product ... ,180D,260D,560D,720D,840D,etc. We can produce white and black spandex.Usage: Covering core, air interlacing yarn, circularly knitting, warp ... to the polymer chain is formed by soft segments and hard segments. Ruyi spandex can be stretched 5-8 times as long ...