The few socks that have been tested have probably been tested with a static, nonmoving test because it's easier. But a foot is always in motion, so they created a jig that replicates the movement of the lower leg. And they tested it on actual riders to verify the results. This sock can save 2 watts at 50 km/h. The newest version has an updated cuff fit for more comfort and aerodynamic gains.
Best Price: £28.00 from Tredz Limited
| Stockist | Catalogue Product Name | Price | |
|---|---|---|---|
| Castelli Fast Feet 4 Cycling Socks | £28.00 | Visit Store | |
| Castelli Fast Feet 4 Aero Cycling Socks - SS26 - White / S/M | £32.95 | Visit Store |
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