Product descriptionHH LIFA MERINO is our 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 fibres plus the unique properties of technical Lifa® fibres. Helly Hansen HH Lifa Wms Merino Classic Crew Persian Red Baselayer & Thermals Ski Clothing