Castelli Fast Feet 3 Socks|Castelli Sock Fast Feet 3 Black – 2XL|Castelli Sock Fast Feet 3 Black – L/XL|Castelli Sock Fast Feet 3 Black – S/M|Castelli Sock Fast Feet 3 White – 2XL|Castelli Sock Fast Feet 3 White – L/XL|Castelli Sock Fast Feet 3 White – S/M

For road racing or when you can't wear a Fast Feet TT Shoecover, this sock saves watts.Castelli's Fast Feet project for riding in warm conditionsThe foot portion is based on the Castelli Rosso Corsa Sock for in-shoe comfortPolyurethane grip strip at top to

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