Upper: Tech Pro Nylon Mesh microfiber
Sidi Heel Cup
Twelve Carbon Composite Sole
A great shoe for the triathlete looking for top performance as well as comfort. Reinforced SIDI Heel Cup that stabilizes and supports the heel. Anatomically shaped plastic, reduces heel slip and provides increased power transfer. Provides additional foot protection in the event of a crash. For walkability, Sidi cycling shoes include a polyurethane Replaceable Heel Pad. 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.
Sidi T-4 Air Carbon Triathlon Shoes - B071X285PZ