Icebreaker BodyfitZONE™ base layers employ our most advanced temperature-regulating natural technology. Soft and odor-resistant merino is used in different fabric forms to trap heat where it’s needed and release it when working at high intensities.
Midweight baselayer bottoms with optimized venting zones for active performance, the Men’s Winter Zone Leggings are Icebreaker's most technical cold-weather leggings. Fully functional for warmth, ventilation, and support while alpine climbing, backcountry skiing, or other day-long adventures in the wild, the body features 260gm merino wool fabric with a touch of LYCRA® for stretch. In the gusset we used lightweight, 180gm eyelet merino mesh that actively controls temperature during high-output pursuits, and in the higher-wear areas around the knees Icebreaker added 230gm merino and polyester waffle jersey for added abrasion resistance. Flatlock seams prevent chafing.