Stay comfortable from morning to night with icebreaker’s merino wool underwear. Designed for a soft, breathable feel, each piece is made from premium merino wool with a touch of LYCRA® for the perfect balance of natural stretch and next-to-skin comfort. Comfortably smooth and lightweight, merino wool underwear naturally regulates body temperature and moves moisture away from the skin to keep you feeling fresh all day. Naturally antibacterial, merino resists odors, making it a great choice for daily wear, travel, and outdoor adventures. Plus, with its soft, breathable fibers next to your skin, you get the ultimate in comfort without relying on synthetics. The collection includes a variety of styles, from boxers and briefs to bras and bikini briefs, all crafted with the same performance-driven merino you love. Used as part of a layering system, merino wool traps warmth between your base layers, mid-layers, and outerwear, enhancing comfort in colder conditions. Pair merino wool underwear with breathable a cami, performance tees, and mid-layers to build a wardrobe designed for all-day ease and natural comfort.