Men's Pro Barrier Long Sleeve Baselayer Engineered for serious outdoor performance, this synthetic baselayer delivers moisture-wicking technology that keeps you dry during intense activity. The long sleeve design provides UV protection and thermal regulation across varying conditions, making it ideal for layering in unpredictable weather. Synthetic construction resists odor and maintains durability through repeated wear and washing. Whether you're hiking, climbing, or backcountry skiing, this baselayer forms the foundation of an effective layering system that manages sweat and maintains core temperature control.