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CastelliPro Seamless Arm Warmer


Item # CSTZ7BG

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  • Black, L/XL ($29.95)
  • Black, S/M ($29.95)
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Item # CSTZ7BG

Pro Seamless Arm Warmer

For those shoulder season temperatures, when committing to a full long sleeve feels a bit like overkill, Castelli's Pro Seamless Arm Warmers let you more easily control your temperature as you heat up throughout the ride or race. Through years of development with Castelli's Pro teams, they crafted these warmers with a blend of polyester, nylon, and Lycra fibers for the perfect balance of warmth without weight or bulk. They provide enough warmth to keep your mind of the chilly temperatures, while the breathability of the fabric keeps you from overheating. When things heat up, the warmers are lightweight and packable to fit comfortably in a jersey pocket for the rest of the ride.
  • Midweight arm warmers to keep you riding all year long
  • Pro-level fabrics and fit offer superb comfort and moisture-wicking
  • Packable size fits easily in jersey pocket when the day heats up

Tech Specs
Material78% polyester, 15% nylon, 7% Lycra
Recommended Useroad cycling
Manufacturer Warranty1 year


Arm & Knee Warmers





Rider Weight

99.2 - 132.3lb

(45 - 60kg)

99.2 - 132.3lb

(45 - 60kg)

132.3 - 154.3lb

(60 - 70kg)

154.3 - 176.4lb

(70 - 80kg)



Short/Jersey Size XS - S S - M S - M L - XL 2XL - 3XL
Short/Jersey Size:
Take your typical cycling short or bib sizing for comparison.

What do you think about this product?


>Rating: 5

Excellent quality

I've used it several times
True to size

I bought the leg warmer version at random and was amazed at the quality and how comfortable they were. I had to pick up the arm warmer version and they are equally amazing. Highly recommend.

>Rating: 5

Good arm warmers

I've used it several times
True to size
Size Bought
one size
5` 11"
185 lbs

Nice knit/weave. Compressive and helpful on chilly days