Say good-bye to mid-layer bulkiness the thin but extremely warm UPSILON helps maintain body temperature by keeping heat in, and wind and water out. With long sleeves and a micro fleece lining, the jacket also features the patented REVIT! WindBarrier, a membrane that repels water, manages moisture, and blocks wind, for ultimate comfort and thermal regulation. PROTECTION FEATURES Outer shell 4-way stretch, REVIT! WindBarrier Waterproofing and Breathability water repellent, highly breathable, windproof ERGONOMIC FEATURES Fit tour fit, regular Features overlock seams, elastic, moisture wicking function Pockets slit pockets