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Our premium merino wool underwear collection is lightweight, soft, and breathable to help keep you comfortable and dry no matter the conditions. With unparalleled breathability and insulation our thermal underwear is available in a variety of styles for men and women, including men's merino wool boxers and briefs and women's thermal bras and shorts. Don't forget to combine with our range of base layers so you can make a start on your next adventure today!
Q: Will merino wool underwear irritate my skin?

A: No, merino wool underwear is designed to be soft, breathable, and gentle on sensitive skin. Its superfine fibres ensure that it feels comfortable against your skin, reducing the likelihood of irritation compared to coarser wool types.
Q: Are icebreaker's merino wool underwear items suitable for active lifestyles?

A: Yes, icebreaker's merino wool underwear is designed for active lifestyles. Its moisture-wicking and temperature-regulating properties make it ideal for activities like hiking, running, and gym workouts. Whether you need men’s or women’s outdoor clothing, merino wool underwear provides the ideal balance of flexibility and support.
Q: Isn’t merino wool underwear too warm?

A: Not at all! Merino wool underwear is designed for temperature control in all conditions. It keeps you warm in winter and cool in summer, making it ideal for year-round wear. Unlike cotton, which absorbs sweat and stays damp, or synthetic fabrics, which can feel sticky, merino wool stays dry and comfortable.
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