Castelli UPF Jersey Sun protection that doesn't make you choose between coverage and airflow UPF 50+ rated fabric is the core of this jersey. It blocks harmful UVA and UVB rays across every panel, so you can skip the sunscreen arms routine on long summer days and just ride. The front panel is lightly perforated to push air through when you're working hard, and the four-way stretch moves with you in the drops or out of the saddle without restriction. A higher collar at the back and longer sleeves close off the gaps that sun sleeves and standard jerseys leave exposed. Three rear pockets with a zippered security pocket handle your essentials, and the elastic waist keeps everything in place when the pockets are loaded. If you spend serious time in the saddle during summer and want coverage that actually works without overheating, this is the jersey for that type of riding. UPF 50+ fabric blocks UVA and UVB rays across all panels, reducing sun exposure without relying on sunscreen Perforated front panel increases airflow where your core runs hottest, keeping comfort up on warm, demanding rides Four-way stretch construction moves with your body in any position, from the drops to standing climbs, without bunching or pulling Higher collar and longer sleeves with raw-cut endings close off sun exposure at the neck and arms while staying comfortable against the skin YKK Vislon full-length zipper lets you dial ventilation precisely during efforts or coast days Three rear pockets plus zippered security pocket with elastic waist keep your kit organized and locked in place on loaded pockets | Castelli | Upf Jersey Men's | Size Extra Large In Silver Gray