HELLY'S warmest base layer pant. Perfect for layering when exploring in cold weather or enjoying a long day on the mountain HH LIFA MERINO is their warmest base layer, perfect for any type of activity in cold weather. A unique 2-in-1 base layer with 100% merino wool combined with Lifa® Stay Warm Technology 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. Weight: 330g 2-layer construction 100% Merino wool exterior combined with Lifa® technology interior Non itch Flat lock seams 215g/m2 fabric