By using Lifa® with Merino Wool we get the best of two worlds. While Lifa® transports the sweat away from your body the Merino Wool ensures you stay warm. Built for high activity on cold days :Lifa® Stay Warm Technology Lifa® Merino No shoulder seams No side seams Flatlock seams for max comfort Compare prices from: Hh Workwear in Men's Clothing