The versatile LIFAA(R) Merino Midweight Crew Base Layer adapts to any type of cold weather. We combined a 100% merino wool layer with our proven LIFAA(R) Stay Warm Technology in a fitted 2-layer construction. LIFAA(R) Merino Midweight Crew Base Layer delivers all the breathable warmth of merino wool fibers, plus the unique moisture management properties of LIFAA(R) fibers. DETAILS:- Fiber content: Shell: 57% Merino Wool, 43% Polypropylene Care instructions: Use wool detergent,Do not use fabric softener,Wash inside out,Do not wring Weight: 275g FEATURES:- 2-layer construction 100% Merino wool exterior Flat lock seams for ideal comfort and durability Non-itch fabric ZQ wool