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Pro Seamless 2 Arm Warmer

5 out of 5 stars
2 Reviews

Out of Stock

Don't worry though, we have a lot more Arm Warmers in stock than that.

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Why We Like The Pro Seamless 2 Arm Warmer

When we can't decide on a long-sleeve jersey or not, we simply pull on the Pro Seamless 2 Arm Warmer and get moving. This arm warmer from Castelli lets us control our temperature easily and transition between layers in seconds. It features the ideal balance between warmth and lightness and provides enough warmth to keep us moving through chilly days. When the sun decides to poke out from behind the clouds, we can easily stow away our arm warmer in our jersey pocket and carry on.


  • Arm warmers that keep us riding through shoulder seasons
  • Midweight for warmth and easy to take on and off
  • Pro-level fabrics offer moisture-wicking capabilities
  • Easy enough to slip off and stow in our jersey pocket
  • Highly breathable for when we heat up
  • Item #CSTZ7J8
78% polyester, 15% nylon, 7% Lycra
road cycling
Manufacturer Warranty
1 year

Overall Rating

5 based on 2 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 0 reviews
3 Stars - 0 reviews
4 Stars - 0 reviews
5 Stars - 2 reviews

Fits Slightly Small

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Runs smallTrue to sizeRuns large

What do you think about this product?


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5 out of 5 stars

September 14, 2023


I've put it through the wringer

Great fit, Great feel. Great look. Need I say more?

yle106688753 y

Originally reviewed on Competitivecyclist.com

5 out of 5 stars

September 18, 2021

Fantastic, but size up.

I've used it once or twice and have initial impressions

Great warmers. Probably my favorite ones over 20+ years on the bike. I'm 6' and 155# and wasn't sure about the sizing - S/M seemed like it might be too small but L/XL definitely seemed like it'd be too big. I ordered both knowing I can just send one back and the L/XL fit great. Length was perfect and the fit was tight. I don't have toothpick arms but they're not exactly big, either. Sizing might be a problem for guys/gals with bigger arms.


Originally reviewed on Competitivecyclist.com