Northern Hunting Norr Fal Baselayer PantsNorthern Hunting Norr Fal Baselayer Pants Norr Fal long underwear is made from stretchy merino wool, providing effective insulation and temperature regulation. The merino wool retains its insulating properties even when wet, making these underwear ideal for high intensity activities where warmth and moisture management are essential. To see more from Northern Hunting, visit the Northern Hunting Collection