Features:- Upper: Vented politex- Sole: Twelve carbon composite sole- Sidi heel cup- Pull-tab on the heel for fast transitions- Replaceable heel padTechnology:Materiale Politex:- The politex material is constructed of several overlapping layers with different physical-mechanical properties, the compacted PVC is then coupled to two fabrics (knitted fabric + felt) that is then is film dyed for long-lasting color retention. Politex offers strong resistance to ripping, laceration, stretching and fading. Politex is made in strict compliance with European regulations and is a totally green product.Tallone Sidi:- The reinforced heel keeps the foot in a optimal position and avoids the shoe being deformed by extreme performance or prolonged pressure.TACCO ANTISCIVOLO:- For walkability, Sidi cycling shoes include a replaceable polyurethane heel padSuola Twelve Carbon Composite:- Twelve carbon composite sole is made with two different materials blended together, nylon and carbon fibre. It is made out of injected Carbon Fiber in a matrix of Nylon. The Nylon used doesn't absorb water and doesn't lose rigidity in hot or humid weather or as it ages. The result is a significantly lighter and stiffer sole.