Castelli | Fast Feet 4 Fietssok | White Sock size:40–43 the Pursuit Gravel will keep

the Pursuit Gravel will keep you running smoothly and confidently

Butterfly stroke

Verstevigingen in voetbed

Engineered mesh upper - Breathable and supportive

Castelli | Fast Feet 4 Fietssok | White Sock size:40–43 the Pursuit Gravel will keepCastelli Fast Feet 4 Cycling Sock: Advanced Aerodynamics for Maximum Speed In the world of performance cycling and triathlon, every detail counts. The Castelli Fast Feet 4 Sock is designed to give riders an aerodynamic advantage at high speed. Thanks to advanced material selection and optimized shaft construction, this sock helps reduce drag, so you can ride more efficiently and faster. Engineered for Aerodynamic Performance The Fast Feet series is