The Viking Lan Pro men's long-sleeve thermal shirt is a premium base layer for all winter athletes and outdoor enthusiasts engaging in activities under extremely cold conditions. It is crafted from a technical blend of 50% Australian merino wool and 50% polyester, delivering an exceptional Extra Warm level of thermal insulation combined with high durability. With a fabric weight of 218 g/m² and an overall weight of approximately 218 g, it offers the optimal balance between lightness and superior thermal comfort.

Thanks to the natural thermoregulating properties of merino wool, the shirt reliably retains warmth while efficiently wicking moisture away from the body and drying quickly, preventing dangerous post-activity chilling. The ultra-fine merino fibers are exceptionally soft to the touch and non-irritating to the skin, while natural antibacterial properties inhibit bacterial growth and effectively neutralize unpleasant odors, even during multi-day alpine expeditions.

Advanced seamless construction and soft flatlock seams eliminate friction and chafing, ensuring exceptional comfort when carrying a backpack or wearing multiple layers. Strategically placed integrated ventilation zones provide unrestricted airflow at high-perspiration zones, while the stretchy fabric and athletic ergonomic fit grant complete freedom of movement during ski touring, snowboarding, or winter mountaineering.