[eighteen] The shoes are constructed with a complex composition of "rubber" with plastic/metallic stiffeners to restrict foot movement. More advanced runners are inclined to use flatter and flexible shoes, which permit them to run more quickly with higher ease and comfort. Sneakers turned a vogue statement and ended up marketed https://bookmarkbirth.com/story19254508/the-basic-principles-of-%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