... covered yarn and double covered yarnNylon covered spandex yarn and polyester covered spandex yarnThe spandex we use includes 20d, 30d ... 140d, 200d etc., is raw white and black, dyed or dope dyed, and flat or textured.The polyester we use includes 50d, 75d, 100d, 150d, ... 200d, 300d etc., is raw white and black, dyed or dope dyed, and flat or ...