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Castelli Mens Fast Feet 2 Sock Black
Castelli Mens Fast Feet 2 Sock White
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Castelli Mens Fast Feet 2 Sock Black
Castelli Mens Fast Feet 2 Sock White

Men's Fast Feet 2 Sock

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This Sock Saves Watts

The Castelli Men's Fast Feet 2 Sock is best suited for road racing in warm weather or when you can't wear a Fast Feet TT Shoecover.


  • Castelli's Fast Feet project — for riding in warm conditions
  • The foot portion is based on the Castelli Rosso Corsa Sock for in-shoe comfort
  • Polyurethane grip strip at top to keep sock in place
  • Leg portion constructed with engineered grooved Lycra® to help detach airflow

B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.


Cuff Height: Crew 


Fabric Type: Blend 

White - S/M

Mfg PartNum: R4523029001-2 

White - L/XL

Mfg PartNum: R4523029001-4 

White - 2X-Large

Mfg PartNum: R4523029001-6 

Black - S/M

Mfg PartNum: R4523029010-2 

Black - L/XL

Mfg PartNum: R4523029010-4 

Black - 2X-Large

Mfg PartNum: R4523029010-6