You might be warm, but you won"t blow a gasket as you climb to the peak in the Arizona desert heat in the Louis Garneau Men"s Short-Sleeve Lemmon Full-Zip Cycling Jersey. The shirt"s textured inner face enhances airflow and wicks moisture next to your skin; comfortable, spandex-enhanced mesh inserts in the underarms and on the sleeves further enhance ventilation. A full-length zip provides the ultimate weapon against overheating as you near the top. Your skin will thank you not only for the shirt"s UPF 40 protection, but for its flatlock seams that won"t chafe when you work up a sweat. Product FeaturesMaterial: [Body] polyester; [Inserts] 85% polyester, 15% spandexFit: SlimPockets: 3 Back, 1 sideZip: FullUPF Rating: 40Recommended Use: Road, mountain bikingManufacturer Warranty: 1 Year