（この画像の場合は、芯ゴムは、天然ゴム糸で、カバード糸は、上糸も下糸もポリエステル糸の生成色です。） One covered yarn involves wrapping one layer of covering yarn all around a Main yarn, normally spandex. This method results in a yarn that gives average elasticity and power, which makes it suitable for several different programs. Remember to talk to your healthcare provider in the eve... https://ahmadi307wyz7.wonderkingwiki.com/user