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Ultralight A/C 18 Sock with breathable construction for hot-weather rides
What Our Gearhead® Experts Are Saying:
"I love the A/C 18 Sock for summer rides. It’s breathable, lightweight, and durable enough to handle long training sessions in the heat."
When the heat is on, the Castelli A/C 18 Sock helps us keep our cool. Built for the hottest days on the bike, this ultralight sock features a ribbed texture for the perfect balance of breathability and durability. Its nylon-elastane blend wicks moisture efficiently while maintaining a snug, race-ready fit. The 18cm cuff adds a touch of classic style, making this sock a staple for warm-weather training and racing.
Details
- Ultralight sock designed for hot-weather cycling and racing
- Ribbed texture enhances breathability and durability
- Nylon-elastane blend ensures a snug, secure fit
- Lightweight design keeps feet cool during long efforts
- 18cm cuff provides a clean and professional look
- Item #CSTZ7WK
- Material
- 96% nylon, 4% elastane
- Height
- crew
- Weight
- lightweight
- Cushion
- ultralight
- Activity
- cycling
- Manufacturer Warranty
- 2 years

Disruptive Innovation Since 1876
Castelli traces its roots back to a fine tailor in the heart of Milan, founded in 1876. Today, Castelli's relentless pursuit of excellence creates disruptive innovation in the cycling community.