Alpine environments and desert mesas are notoriously fickle in the weather department, ranging from scorching sun to whipping fronts in a matter of minutes. The Alpinestars Men's Long Sleeve Mesa Jersey helps to regulate your core temperature when you're riding in quickly changing alpine and desert environments. Its advanced polyester fabric promotes rapid moisture wicking and evaporation, keeping you from overheating and freezing on long rides with substantial elevation gains. Its long, pre contoured sleeves enhance range of motion when you're cleaning tight switchbacks and launching your bike off small drops. Other functional features include open mesh inserts for extra ventilation, as well as a side media pocket for seamlessly routing your favorite tunes.