A unique 2-in-1 base layer with 100% merino wool exterior and 100% LIFA® Stay Warm Technology interior LIFA® MERINO MIDWEIGHT is 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. LIFA® Merino MIDWEIGHT delivers all the great benefits of merino wool fibers plus the unique properties of technical LIFA® fibers.Fiber Content: 57% Merino Wool, 43% Polypropylene FEATURES 2-layer construction100% Merino Wool exterior225g LIFA® Merino fabricNon-itchFlat lock seams