At first glance, this is a simple underwear set in a classic style, consisting of a long-sleeve shirt and underwear. However, for those who want to wear the same outfit on frosty days as well as on mildly warm summer days, our functional set is an excellent choice. The unique fiber structure of merino wool provides insulation in cold weather and cooling in heat. It offers ideal thermal regulation for the leg area on the ski slopes under ski pants or in summer under a softshell jacket. In both cases, the natural fiber delivers optimal performance. The 200 g/m² fabric weight covers a wide temperature range, keeping you warm in icy winter temperatures and lightly cooling in late spring as the first warm summer days arrive. In all scenarios, the pants feel soft against the skin and do not itch. No pinching, no chafing, no skin irritations. Flatlock seams, a gusset in the crotch, an elastic comfort waistband with a distinctive logo print as a subtle eye-catcher, and an ergonomic cut provide the foundation for a perfect first layer for climbing, speed hiking, trekking, or any movement-intensive activities. Excellent moisture management and temperature-regulating properties ensure comfortable wear. Whether directly on the slopes or during a break at one of the many mountain huts, the natural fiber consistently creates a balanced wearing experience. The merino fiber is odor-neutral. On multi-day hikes, prolonged sitting while traveling, or overtime in the office, unpleasant odors are hardly absorbed. Odor-resistant, antibacterial, and easy to care for, the underwear can be hand-washed on a bivouac trip and can be worn for more than one day with a pleasant body climate.