[18] The footwear are manufactured with a complex construction of "rubber" with plastic/steel stiffeners to limit foot motion. Much more advanced runners are likely to use flatter and flexible shoes, which allow them to operate far more quickly with increased comfort. Sneakers turned a style assertion and had been marketed https://bookmarkspiral.com/story19155730/a-review-of-%CE%B3%CF%85%CE%BD%CE%B1%CE%B9%CE%BA%CE%B5%CE%B9%CE%B1-%CF%83%CE%BD%CE%B9%CE%BA%CE%B5%CF%81