What is the purpose of a base layer? Women’s base layers are next-to-skin garments designed to regulate temperature by wicking sweat away from your body and staying fresh during high-output efforts.

What makes a base layer moisture-wicking? Moisture-wicking base layers use specialized fabrics that pull sweat away from your skin and move it outward, preventing moisture from sitting against your skin where it causes heat loss and discomfort.

When should I choose a synthetic base layer over Merino wool? Synthetic base layers are ideal for summer activities, variable weather, and situations where quick drying is important, while Merino wool works better for multi-day alpine climbs and consistent cold conditions.

How does Phasic™ Technology work? Phasic™ technology in base layers adapts to your activity level in real time—it rapidly moves moisture outward when you're warm and sweating, then retains warmth and minimizes cooling when you stop.