And when wool fabric is thin enough, the attributes that give it its cold-weather superiority-namely its attraction to water vapor and its ability to remain dry after absorbing moisture-are just as beneficial in the heat.Īs it turns out, the wool evangelists (we’ve all met one) preaching counterintuitive virtues aren’t crazy: the same fabric bolstering your heavy winter coat is also ideal for summer runs. “These fine fibers, twisted tightly, can be knitted into very fine fabric structures that are used in sportswear,” she said. It was always associated with being warm.”īut wool is different now - the fabric and the fibers have evolved. “You had a big wool jacket or a big wool coat or a wool cardigan or sweater. Laing is professor emeritus at the University of Otago, where she studies clothing’s effects on thermoregulation and performance during exercise. “‘Wool is warm’ is a 1960s perception,” Dr. Wool as strictly a winter layer is an old idea. Testing the absorption capacity, water retention, and drying time of wool, synthetic, and cotton shirts.
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