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Merino Wool Base Layers

icebreaker has the world’s best merino wool layering system. Our base layers are made with superfine merino wool, sourced from our growers in New Zealand. Naturally breathable and moisture-managing, merino wool moves sweat away from your skin so you can stay dry and comfortable no matter the conditions. Designed for versatility, these base layers offer lightweight insulation without bulk. Wear them as thermals for warmth in the most extreme cold or under winter clothes for everyday coziness. Merino naturally regulates body temperature in both hot and cold weather, making it just as essential for summer summit pushes as it is for deep-winter adventures. The odor-resistant properties mean you can go longer between washes, staying fresh after a multi-day hike, a long travel day, or a tough gym session. Layer merino wool leggings and tops for cool-weather hikes, mountain training, and snow sports, or with shorts for autumn and spring cycling and running. These base layers fit seamlessly under any outfit, providing the warmth, breathability, and performance needed to take on any challenge.
Merino Wool Base Layer FAQs
Q: Do merino wool base layers stretch out over time?

A: Merino wool has natural elasticity, allowing it to maintain its shape wear after wear. The fibers recover well, so base layers won’t stretch out or sag, even after repeated use. For long-lasting performance, follow proper care instructions by washing in cold water and laying flat to dry.
Q: Are merino wool base layers good for sleeping?

A: Yes. Merino wool is incredibly soft, breathable, and temperature-regulating, making it an excellent choice for sleepwear. It keeps you warm in cold conditions and cool in warm environments, helping maintain a comfortable body temperature throughout the night.
Q: How do merino wool base layers handle humidity?

A: Merino wool naturally absorbs and releases moisture, helping regulate body temperature even in humid conditions. The breathable fibers prevent overheating, while the fabric’s ability to pull moisture away from the skin keeps you feeling dry and comfortable.
UnderwearBase layersT-shirts & tanksSweaters & hoodiesJackets & vestsPants, tights & shortsSocks