Castelli Fast Feet 4 Sock Closeout choose Shumo as your go-to

choose Shumo as your go-to

the Access Down Hoody is our most versatile midweight down insulator that brings the heat for primo fall cragging days

8-base lens curvature offers a wraparound fit

Can be applied to chain

Altimeter: Yes

Castelli Fast Feet 4 Sock Closeout choose Shumo as your go-toThe Castelli Fast Feet sock has the development and testing to back up the aerodynamic claims. Features: Castelli's Fast Feet project for maximum aerodynamics Foot portion based on 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