Lightweight, Bike-Specific Fit and Breathable UPF 30 Sun Protection The Freewheel MTB Short Sleeve Jersey is a breathable, moisture-wicking top with a bike-specific cut for trail and gravel riding. This mountain bike jersey combines wicking, quick-drying, and breathable bluesign® approved materials with features like a drop-tail hem, UPF 30+ sun protection, and strategically placed shoulder seams for comfortable pack wear. ActiveTemp™, a thermo-regulating treatment, manages body temperature during long ascents and technical, heart-pumping descents. For sun protection and moisture-wicking with a fit designed for epic days in the saddle, the Freewheel MTB Short Sleeve Jersey is an ideal addition to any bike kit.