Hohenstein’s WATson heat loss device measuring the cooling power of textiles is now a DIN SPEC standard. The 2019 published DIN SPEC 60015 Quantitative measurement of the evaporative heat loss of smart textile materials for work, sports/outdoor and leisure defines the measuring procedure and requirements for textiles and clothing that claim to have a cooling effect. “This already offers a market compliant standard,” the Institute reports. “The next stage is to convert the method into an ISO standard.”