The women's Icebreaker 300 Merino Fine Polar Long Sleeve Half Zip features a stand-up collar that can be partially opened with a zipper, and is characterized by a particularly fine merino wool quality with a fiber thickness of only 15.5 microns, which feels especially smooth and extremely soft against the skin. This extra-soft "fillet wool" is reliably itch-free, even for very sensitive skin. The 300g/m² thick fabric provides excellent warmth even in sub-zero temperatures, yet prevents rapid overheating during changing activity levels. Flat seams and a pre-shaped cut with raglan sleeve construction prevent chafing and offer freedom of movement.
Made from 100% merino wool from responsible sheep farming (mulesing-free), this Icebreaker underwear is odor-resistant and temperature-regulating. It is a sustainable natural product because no microplastics enter the wastewater during washing. Learn more about the benefits of merino underwear in a detailed comparison of merino vs. synthetic fiber.
Material: 100% wool (merino wool)
Material thickness: 300g/m²
Fit: Icebreaker Bodyfit
Special features: Superfine 15.5 micron luxury merino wool, ergonomic seam guidance, zippered stand-up collar, thumb loops









