[18] The footwear are made with a posh structure of "rubber" with plastic/steel stiffeners to limit foot movement. Much more advanced runners tend to have on flatter and flexible footwear, which allow them to operate a lot more quickly with bigger ease and comfort. Over the years, sneakers have acquired https://tbookmark.com/story19030279/the-single-best-strategy-to-use-for-%CE%B1%CE%B8%CE%BB%CE%B7%CF%84%CE%B9%CE%BA%CE%B1-%CE%B3%CF%85%CE%BD%CE%B1%CE%B9%CE%BA%CE%B5%CE%B9%CE%B1