Best suited for cold weather rides, the Castelli Alpha 18 socks are soft and warm. Constructed from a blend of PrimaLoft and merino wool fabrics, these socks have a natural wicking property to keep your feet dry. Featuring an arch-support band around the mid-foot for support, nylon heel and toe for durability, and a reflective strip at the back for a touch of added visibility.
- PrimaLoft® / merino wool blend
- Arch-support band
- Nylon heel and toe for durability
- Reflective stripe on back
- 18cm/7-inch cuff length



