This merino wool baselayer offers high performance for intense activity. The 260-weight wool is soft, moisture-wicking, and odor-resistant. Quilted MerinoLoft at the chest adds core insulation. The ZoneKnit design regulates temperature with breathable zones. A balaclava-style hood insulates the face in cold weather. Raglan sleeves and gusseted underarms enhance comfort and mobility. Thumbholes keep the baselayer securely in place when layering.