（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。） Solitary covered yarn requires wrapping just one layer of covering yarn around a Main yarn, commonly spandex. This method leads to a yarn that offers average elasticity and toughness, which makes it appropriate for a number of applications. Remember to speak to your healthcare supplier... https://kinkyb789ulz1.wikirecognition.com/user