Our BodyfitZONE™ construction combines lightweight merino wool with strategically-placed merino mesh panels to help regulate your body temperature. With heat retention and heat dumping zones, BodyfitZONE™ clothing finds the perfect balance between insulation and ventilation for those stop-and-go days. These base layers will keep you warm in the winter, but also help you cool off when you’re active. Their unique construction makes them perfect for skiing, snowboarding, running, and hiking. Pair with some men’s pants or a men’s sweater for additional warmth this winter.