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What is moisture wicking? A craft and fashion pro’s guide TL;DR: Moisture-wicking fabrics move sweat along fiber surfaces through capillary action, promoting quick evaporation. Polyester resists absorption with low moisture regain, enabling faster drying and drier feeling garments. Proper testing, construction, and care ensure these fabrics perform optimally in activewear and performance applications. If you’ve ever labeled a polyester knit “moisture wicking” because it dries fast, you’ve made the same mistake most people do. What is moisture wicking, really? It’s not absorption. It’s t …