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Item # CST0764

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Item # CST0764

Keep the chill off the pythons.

Make the early part of your early-morning rides more tolerable with the Castelli Arm Skins.

  • Silicone grippers keep everything in place
  • Lycra construction won't stretch out and bunch

  • Lycra
  • Seamless
  • Silicone gripper

Tech Specs

Recommended Use:
Manufacturer Warranty:
1 year

Size chart


Arm and Knee Warmers
Rider Weight 99.2 - 132.3lbs
(45 - 60kg)
132.3 - 154.3lbs
(60 - 70kg)
154.3 - 176.4lbs
(70 - 80kg)
Short Size XS - M S - M L - XL 2XL - 3XL
Short Size:
Take your typically cycling short or bib sizing for comparison.

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Short Length, Soft Bicep Band, No Sheen

  • Size Bought: Small/Medium

I purchased the men's small/medium size for my slim female arms. The bicep band is elastic wrapped in soft material. There is not any silicone dots or lines on the band against the skin. Feels very nice, but will see how they stay up on the arm while cycling. The wrist band is similar construction.
The arm material is soft and not a silky sheen as with other brands. Not having used them yet, it will be interesting to see if these feel cooler than the nylon-type sheen materials used by Novarra (REI) and Castelli.
The LENGTH is certainly shorter than Novarra and Castelli. I have longer arms and it just reaches my glove.

Unanswered Question

Do they come in pairs?

Love this

  • Familiarity: I've used it once or twice and have initial impressions
  • Fit: True to size

This was something I never thought I would need, but because of the great price, I thought I'd give it a try. I found that I DID need these--especially now that summer is upon us! The Castelli Sun Sleeves fit well, and the length is perfect for my long "monkey" arms! It certainly beats slathering sunscreen all over, and because of the light material, I remain cool.

Nice to Throw in the Jersey

  • Familiarity: I've used it several times
  • Fit: True to size
  • Size Bought: S/M

Very compact and light. Fits well in a jersey pocket. As other mentioned, not the warmest arm warmers but provide some good overall protection.

Long sleeve jerseys?

  • Familiarity: I've used it several times
  • Fit: True to size

I have a few of these because I want sun protection, and there are very few summer weight long sleeve jerseys. I've worn them in 65 to 95 degree weather and have been very happy with them.

Sun Protectors

  • Familiarity: I've put it through the wringer
  • Fit: True to size
  • Size Bought: L/XL

I have used these during Xterra Triathlons. They are great as sun protectors but these are not warmers. They fit really well and do a great job protecting my very pale skin.

Avg. ride time: 3h 3m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Sun protection not really warmers

  • Familiarity: I returned this product before using it

According to the Castelli package these are sun protection, 67F+. No silicone grippers as stated in product description. Light in and thin, would be good for hot sunny rides but not what I wanted.