The men's Lifa Merino Boxer Windblock is the warmest baselayer underwear by HELLY HANSEN and is perfect for exploring in cold weather or enjoying a long day on the mountain

HH Lifa® Merino is the warmest baselayer by HELLY HANSEN, perfect for any type of activity in cold weather. The unique 2-in-1 baselayer combines with Lifa® Stay Warm and 100% merino wool in a 2 layer construction. HH Lifa® Merino delivers all the great benefits of merino wool fibers plus the unique properties of technical Lifa® fibers.