An absolute necessity! With this zipped pullover windshirt, you can stay nice and warm with the Insu-Lite technology which offers a thermal layer even though it's a lightweight fabric. The fabric also offers up high breathability and moisture wicks to make sure you stay warm and dry. The windshirt works to move the moisture out to the surface for quicker evaporation. With tonal ribbed knit hems around the cuffs and neck.