The PASSION Z4 Aero Overshoes represent a complete overhaul of Kalas's aerodynamic shoe covers. The revised pattern ensures a closer fit to the shoe, delivering enhanced aerodynamic benefit. To ensure the upper section stays in place throughout your race, they have revised the shape and added a double gripper. Kalas also recommend a revision to how these overshoes are put on. Put the overshoe on before the shoe and pull the overshoe up beyond the ankle. Then put on the shoe and pull the overshoe down on top of the shoe.
Best Price: £54.99 from Merlin Cycles