What Our Gearhead(R) Experts Are Saying: "This baselayer is my go-to on deep winter days. The Merino 260 fabric feels incredible against the skin, breathes well when I'm moving hard, and keeps me warm on the chairlift. It layers easily under my shell, and I've worn it on everything from backcountry tours to cold resort laps."We rely on the Merino 260 Tech Vertex Long-Sleeve Crewe GRX1 when the mountains turn cold and the days get short. Crafted by Icebreaker from 100% pure merino wool, this baselayer is luxuriously soft, impressively warm, and naturally odor-resistant, making it ideal for everything from snowshoeing and ski touring to fireside recovery. Designed with gusseted underarms and flatlock seams, the Vertex Crewe moves with us without causing irritation or restriction. It's inspired by the flowing forms of glacial rivers, reflected in the jacquard pattern, and built for dynamic winter layering. Whether we're chasing powder or gearing up for shoulder-season hikes, this layer becomes our cold-weather essential.