Meet the Men's Intraknit™ Thermal Max Merino Base Layer 1/4 Zip. This bulk-free, 100% Merino wool thermal layer brings a new dimension to active winter wear. With seamlessly integrated insulation and ventilation, perfectly articulated flex zones, and Merino comfort, it'll be the first thing you grab when you need a warmer layer for your high-intensity, cold-weather adventures. Features: Our slim fit is intended to follow the contours of the body Featuring Intraknit™ technology: Insulation, articulation, and ventilation are seamlessly integrated to help with movement and comfort during high-intensity activities 100% Merino yarn provides the full power of Merino with moisture management, insulation, thermoregulation, and odor control Insulating terry loops are seamlessly paired with mesh ventilation in gender-specific zones to help balance warmth and breathability 3D mapping results in near custom fit and freedom of movement 8.25" (21 cm) center-front zipper Made in India: 97% Merino Wool, 2% Polyamide, 1% Elastane. Exclusive of Decoration. Care Instructions: Machine Wash Cold Gentle Cycle Wash With Like Colors Do Not Bleach Dry Flat Cool Iron As Needed Do Not Iron Decoration Do Not Dry Clean