What Our Gearhead(R) Experts Are Saying: "This merino zip neck is the perfect balance of warmth and breathability. The wool is soft enough for next-to-skin comfort, and the half-zip makes it easy to regulate heat during climbs. It's durable, odor-resistant, and feels great on multi-day trips."The Norr na femund pureUll Zip Neck is crafted from 100% premium merino wool for natural performance in all conditions. Built as a midweight base layer, it offers temperature regulation, moisture management, and odor resistance that adapts to both high-output alpine climbs and everyday winter wear. Made with ultra-fine 18. 5-micron fibers, the pureUll fabric provides a soft, itch-free feel against the skin while remaining durable against pilling and abrasion. The half-zip collar allows for easy venting and added warmth, while flatlock seams and articulated arms ensure comfort and mobility in technical use. Responsibly sourced and RWS certified, this baselayer delivers both performance and sustainability.