Get Comfy With Merino Uphill, downhill, or just standing around, the women's Burton Phayse Quarter-Zip Base Layer sets the standard for temp regulating comfort. It's the lightweight merino blend yarn that sets it apart from the crowd and gives it real-world breathability and comfort credentials. Wear it riding. Wear it hiking. Wear it anytime you need lightweight, low-profile warmth. Any which way, it has you covered with all-natural temp regulation and a soft, easygoing feel. Features: All-Natural Merino Power Merino wrapped nylon core yarn puts 100% merino against the skin for natural temperature regulation, breathability, and stink-free comfort. The nylon core adds strength for long-term fabric durability. Vented Merino mesh panels add extra breathability where you need it most. All the Tech Stretchy, breathable, and super soft. It's ready for a workout. Tech Specs: Fit Next to Skin Fit Features + Tech Chafe Free Chin Guard Chafe-free Softlock Seams for Comfort Designed For Ultimate Layering Performance Double Needle Stitching on Sleeves and Hem High Merino wool content (+50%) provides excellent natural thermoregulation and odor control Locker Loop Maximum Warmth with Minimum Weight Next to Skin Fit Odor Reducing Quick-Drying and Highly Breathable Strategic Fabric Placement for Warmth and Breathability Where you Need It Stretch 360° For Unlimited Mobility YKK® Zippers Imported Yes Venting Venting Mesh Piecing Fabric Merino Single Jersey, using Rapt™ Yarn 87% Merino/13% Nylon (16.5 Micron) Pieced with Venting Mesh ReRAPT™ Yarn 49% Merino /51% Nylon. Warranty Lifetime Warranty Sustainability Responsibly Sourced Wool (RSW) Burton Women's Phayse Merino Quarter-Zip First Layer - True Black | Shop Shirts & Tops at Trojan Wake Ski Snow & Snow Skiers Warehouse