The Castelli UPF 50+ Light Arm 2 Sleeves deliver high-performance protection and comfort for sunny rides. Made with Solare fabric, these sleeves wick moisture effectively to keep arms cool and dry on hot days. Featuring a UPF 50+ rating, they provide top-tier sun protection, while the double-sided silicone elastic ensures they stay securely in place. Designed for road cyclists tackling long sunny rides, these sleeves offer an ideal combination of function and performance.