Shape Retention: Spandex-coated heel counters can keep the shape from the shoe higher, avoiding deformation or sagging, Consequently assisting to maintain the looks and overall performance of the shoes. Very practical from style to medication The standard winding system can be described as the typical approach for producing elastic yarns. https://coveredspandexyarn89999.bloggazza.com/31432667/indicators-on-smoking-thread-you-should-know