Discover our versatile range of women's thermal tops and bottoms in soft, Ethically sourced from merino wool and sustainably grown plants. Perfect for your life on the move, from snow sports to commuting to everyday warmth and travel, they’re the natural choice for comfort. Our base layers are made with our signature icebreaker merino wool, a superfine, annually renewable fiber grown in the rugged Southern Alps of New Zealand. It faces the ultimate field test out in nature and has adapted to keep the merino sheep warm during harsh winters and cool in scorching summers. Durable for everyday wear, lightweight and soft against your skin, merino wool is nature’s performance fiber, wicking away moisture and regulating your body temperature to keep you in your comfort zone, whatever the conditions.