Castelli UPF 50+ Light Arm 2 Sleeves Color:White the Petzl SWIFT RL intelligently

the Petzl SWIFT RL intelligently adjusts brightness to the environment

The boot also features a 45mm power strap that delivers exceptional power transmission and improved responsiveness

boasting a well-rounded design and exceptional comfort

low-output days sometimes add a warmer aftermarket liner

wider than the 98mm Backland Carbon and Hawx boots

Castelli UPF 50+ Light Arm 2 Sleeves Color:White the Petzl SWIFT RL intelligentlyCastelli officially rates these warmers at a UPF of 50+, but our laboratory tests have shown that they block an impressive 99. 8% of harmful UV rays. We utilized a polyester base, which is more effective than nylon at blocking UV rays and significantly better at keeping you dry. This means these arm sleeves perform well in both cooler and warmer conditions. We have designed the construction to be very streamlined, eliminating seams that could cause