Aero Advantage
Shimano S-PHYRE Flash Shoe Covers are wind tunnel tested to deliver maximum aerodynamic efficiency. The ankle cuffs feature vertical grooves that reduce air resistance while the portion that covers the shoe wraps the foot tightly, ensuring no wasted watts.


Total Control
The S-PHYRE Flash Shoe Covers are quick to put on and easy to remove with hook-and-loop fasteners. They stay securely in place with silicone grip fabric on the calf, ensuring you save every watt possible.