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Military Green

Cubi 18 Sock

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Warm and Comfortable Feet for your Best Ride Yet

The transition from summer to autumn is very clear for cyclists. You must ditch the lightweight, uninsulated gear for those that can stand their ground. So, what better than the Castelli Cubi 18 Sock, which works with the natural contours of the foot to keep you warm and comfortable all day long.

Constructed from an incredibly soft Merino wool blend for long-lasting comfort to last you the whole ride. Featuring ingenious terry loop knit under the foot to provide extra warmth as well as the perfect amount of padding — no feet falling asleep over here! An impressive 18cm cuff protects your entire ankle from pokes and prods, practically eliminating those annoying little scratches.

The Castelli Cubi 18 Sock lives and breathes cycling with fantastic comfort as well as the sustainable wool blend. Although cold-weather rides can be difficult and uncomfortable, treat yourself to a sock that will push you to push your own limits — no matter what time of the year it is.


  • Merino wool blend
  • Terry loop knit under foot for padding and extra warmth
  • 18 cm cuff

  • B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.


    Cuff Height: Crew 


    Fabric Type: Polyester/Spandex blend 

    Black - S/M

    Mfg PartNum: R20541010-2 

    Black - L/XL

    Mfg PartNum: R20541010-4 

    Black - 2X-Large

    Mfg PartNum: R20541010-6 

    Military Green - S/M

    Mfg PartNum: R20541075-2 

    Military Green - L/XL

    Mfg PartNum: R20541075-4 

    Military Green - 2X-Large

    Mfg PartNum: R20541075-6 

    Ordered by Most Relevant First
    5 stars
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    1 stars
    Like my red legs
    by Rick Bobby

    Nice and comfortable socks y will get a definite color

    Reviewed 12/25/2020
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    Great fit and warm
    by iridebikes
    Competitive Racer
    Atlanta GA

    Looked like a good sock for cooler temps and these don't disappoint at all. Well made and warm!

    Reviewed 11/20/2020
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    Thank you for your feedback.