nylon covered spandex yarn single covered yarn raw white Z &S excellent quality and competitive price nylon covered spandex yarn:Hangzhou uniwell textile co ... :Air covered yarn and conventional covered yarnSingle covered yarn and double covered yarnnylon covered spandex yarn and polyester covered spandex ... 30d,40d,50d,70d,100d,140d,200d etc.the polyester we use includes 50d,75d,100d,150d,200d, ...