@thewoolmarkcompany: A North Carolina State University study found that 100% Merino wool is the most energy-efficient performance fabric for outdoor athletes. Merino wool required 12.6 kJ/m² of metabolic energy to maintain thermal comfort, while polyester demanded 20% more energy for the same comfort level. For outdoor sportswear and performance apparel brands, this could mean a real competitive advantage in endurance, recovery, and thermal regulation. #merinowool #Hiking #performancewear #fyp #Science