Castelli UPF 50+ Light Arm 2 Sleeves Color:White Developed with input from world

Developed with input from world cup athletes and pros

The innovative Unified Suspension Setup is customized to fit each rider's body weight

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Flex Not assigned a numeric flex index by Dynafit

Castelli UPF 50+ Light Arm 2 Sleeves Color:White Developed with input from worldCastelli 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