Description
Developed with Team Sky, the Fast Feet TT Shoecovers are all about cutting drag and so maximising power output during time trials and fast road races. Castelli tested the covers extensively, both via CFD analysis and in the wind tunnel, and this led the two-part design; a smooth silicone lower section gives a smooth profile across the foot, while the tall upper portion uses slim grooves to help detach airflow over the leg to decrease drag. The two surfaces work together to make these the ultimate choice when you want to gain vital time on rivals, particularly in time trials but they're also great in road races too.
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