W LIFA MERINO MIDLAYEROur warmest base layer combines unique LIFA wicking technology with merino wools natural warmth. The best base layer on the market uses a clever 2 layer construction to keep you dry and warm during any cold weather adventure. Our LIFA technology wicks away moisture while merino wool creates breathable warmth. With 65% Merino Wool and 35% Polypropylene, you get the ultimate benefits of both. LIFA MERINO 2 layer construction 100% Merino wool exterior