Thanks to the combination of Merino wool and UYN technologies, this short-sleeved UYN ENERGYON MERINO underwear keeps your body dry and at the ideal feel-good temperature, while ensuring outstanding skin comfort. The bodymapped construction features the exclusive FLOWTUNNELS ventilation system in the high perspiration areas (chest and back): the combination of holes and 3D channels promotes air circulation to create the perfect body micro-climate. The sleeves and shoulders are made with the patented HYPERMOTION technology, designed to guarantee total freedom of movement. UYN ENERGYON MERINO is the ultra-versatile underwear, ideal for all outdoor activities in medium to low temperatures.