Alpha 18 Sock

The Castelli Alpha 18 Sock keeps our feet and ankles warm and protected as we continue to put miles in on our bikes during the cold winter. Its merino wool blend and PrimaLoft insulation keep our feet from freezing while also ensuring we don't overheat, thanks to its breathable and moisture-wicking properties.

Details

• Winter sock built for all-day riding warmth
• Merino wool blend is moisture-wicking and breathable
• PrimaLoft insulation offers exceptional warmth
• 18cm crew length offers extended coverage
• Nylon heel and toe add long-lasting durability
• Reflective stripe on rear of sock enhances visibility
• Item #CSTZ7IC

Tech Specs

• Material: merino wool blend, PrimaLoft insulation
• Height: crew
• Weight: lightweight
• Cushion: none
• Activity: road cycling
• Manufacturer Warranty: 1 year
• storecredits: 0.0