- SOLARE FABRIC: Our Solare fabric helps keep the chill off on cooler rides, but remains breathable on warmer days to prevent overheating and sweating.
- UV PROTECTION: Rated UPF 50+, it blocks 99.8% of damaging UV rays. The polyester base is not only more effective than nylon at blocking UV rays, it also excels at keeping you dry.
- SILICONE GRIP: Double-sided silicone elastic at the top provides excellent grip to prevent the sleeve from sliding around.
- COMPACT DESIGN: These sleeves fold up extremely small, so they can easily be stuffed in your pocket or pouch for your next big mountain ride.
- SEAMLESS COMFORT: For maximum comfort construction was kept clean to eliminate seams that can rub and cause irritation.
Dodging the sun is nigh impossible for most of us; don the Castelli UPF 50+ Light Arm Sleeves and worry not about extreme sun exposure. Castelli claims these sleeves block 99.8% of UV rays and the same polyester material that provides those sun protection benefits also breathes incredibly well.

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