TPU film and textile mesh are thermo-bonded together to create Synchwire, a single-layer upper that conforms to the foot, provides phenomenal structural support and ventilation. Three compression molded Hook & Loop straps provide tried and true tightening and support. New injection molded nylon and glass fiber outsole with overmolded heel and toe pads, plus a 3/2 insert pattern gives one the power one need and pedal system flexibility.