After extensive testing by the Hohenstein Institute, Bönnigheim, Germany, temperature-regulating fibers made by Coolcore LLC, Portsmouth, N.H., have received the first Hohenstein Quality Label “Innovative Technology—Cooling Power.” The Coolcore textiles are chemically-free and do not use latent heat storage or phase-change materials to absorb and store heat. Instead, the textiles exploit the body’s sweat to achieve significantly higher evaporative cooling than conventional fabrics or materials. The Hohenstein labs used the WATson Heat Loss Tester measurement device that measures heat dissipated from the skin under different ambient conditions, from tropical heat to cool temperatures, as well as heat loss from high wind speeds. Using WATson, textiles can be tested during development stages and optimized to provide the best cooling effect. For more information on Coolcore fibers, visit the Coolcore website.