Men's lightweight thermal jacket, designed for mountain activities and suitable for everyday wear. The double-sided ventilated knit wicks away moisture and is quick-drying. Light thermal protective jacket designed for men. Ideal for mountaineering and built for everyday adventure with an inside/out contrast of fabrics, it features an airy, breathable mesh interior and quick drying heathered knit exterior. The streamlined design and flatlock construction enhance light weight and switches easily to daily wear.