Through cooperation with Team Ineos, Castelli set out to make a better seamless warmer. Others on the market are made with a Nylon/Lycra blend that tends to hold moisture, but Castelli knew they could get better moisture management with a polyester yarn. These warmers evolved into a pro rider favorite because they're super light and 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.
This product was added to our catalog on March 12, 2021
| Weight (lbs) | Short/Jersey Size Relation | |
| S (Women) | 100 - 135 lbs | XS - S |
| S (Men) | 100 - 135 lbs | S - M |
| M | 135 - 155 lbs | S - M |
| L | 155 - 175 lbs | L - XL |
| XL | > 175 lbs | 2XL - 3XL |
Note: All measurements are provided by the manufacturer and may vary depending on how measurements are acquired.
