Longevity.

One of the most redeeming qualities of Sidi shoes is the fact that you can replace a range of small parts throughout the shoes. Rather than having to abandon a pair of shoes because the closure strap has worn out, Sidi's Tecno 3 Soft Instep Closure System lets you easily bring new life to a shoe that still has plenty of miles ahead of it. If only it were this simple to replace worn-out knees.