The Castelli UPF 50+ Light Arm Sleeves are surprisingly useful. While they can officially only rate these warmers at UPF 50+, in Castelli's laboratory tests they actually blocked 99.8 percent of damaging UV rays. They use a polyester base that is not only more effective than nylon at blocking UV rays but is also much better at keeping you dry, which means these sleeves are better in both cooler and warmer conditions. Castelli kept the construction very clean to eliminate seams that can rub and used double-sided silicone elastic to make sure they stay in place. They fold up extremely small, so they’re great to stick in your pockets for your next big mountain day.
Features:
Specifications:
Fabric: Solare
SPF/UPF: Yes
Seasons: Warm Weather
Visibility: -
Water Resistant: -
Color: White
This product was added to our catalog on April 21, 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.
