$44.99
Its fully seamless construction and unique polyester blend provide superior warmth and moisture management without overheating.
They offer excellent warmth in cooler conditions while preventing overheating in milder weather, making them versatile for various rides.
Yes, they fold up extra small, making them convenient to carry in your pocket or jersey.
The warmers are made from a blend of 78% polyester, 15% nylon, and 7% Lycra® for optimal stretch and comfort.
They are lightweight, warm for their weight, and provide a barely-there feel, enhancing performance without bulk.
With pro riders Castelli set out to make a better seamless arm warmer. Others on the market are made with a nylon/Lycra® blend that tends to hold moisture, but they knew they could get better moisture management with a polyester yarn. Working with polyester makes it more difficult to get the right stretch, return and manufacturing consistency, though. It took a year longer than they thought, but we're all glad they stuck with it. These warmers are a pro rider favorite because they're crazy light and they're extremely warm for their weight, yet even in milder conditions you don't overheat. They're so stretchy you hardly feel them on, yet when you take them off they occupy a fraction of the space that normal warmers would take in your pocket.