The Only Base Layer You Need for Exceptional Performance Experience the epitome of comfort and performance with the revolutionary Merino Wool Base Layer Hoody by Vertx. Our cutting-edge fabric blend combines the finest Merino Wool with durable Nylon and groundbreaking GM ReRapt™ technology, all enhanced by the unrivaled comfort and microclimate control of 37.5® Technology. Designed to keep you feeling fresh, dry, and confident all day long. With its anti-itch properties, exceptional breathability, wrinkle resistance, and moisture management capabilities, you'll experience a level of comfort you never thought possible. But that's not all - our base layer takes performance to new heights with its 5x quick drying capabilities and added durability. Features: The perfect combination of durability and microclimate control made with GM ReRapt™ and 37.5® Technology 120g/160g Hybrid construction with heavier weight in high-wear areas Raglan sleeve with a gusseted underarm panel ensures sustained comfort without restricting movement Spandex thumb loops to keep sleeves in place when moving Fitted, low-profile hood with overlapping neck Flatlock seam construction designed for fewer friction points Hanger loop for heatless drying  Odor-resistant fabric Fabric and Technology: Merino blend utilizing ReRapt™ technology providing superior durability and shape retention. 37.5® Technology helps your body maintain its core temperature and manage moisture in your microclimate to help you perform at your peak by staying warm, dry, and comfortable all day. Panel A: 120g 48% Merino/39% 37.5® Technology Nylon/13% Nylon 17.5 micron Panel B: 160G 49% Merino/40% 37.5® Technology Nylon/11% Nylon 17.5 micron