Hierarchical Weaving Metafabric for Unidirectional Water Transportation and Evaporative Cooling

Abstract Smart apparel with unidirectional sweat transportation functionality is highly desirable for wearing comfort. However, simultaneously achieving fast water transport, mechanical robustness, human body comfortability, and industrialized fabrication challenging because of the difficulty in fiber‐yarn‐fabric multiscale textile structure manipulation. Here, first time, a water‐transportation metafabric (UWTM) hierarchical weft‐double‐weave developed using industrial‐producible weaving technology. The UWTM not only shows property, but also robust air permeability, tailorability, comfortability. realized by well‐engineered wettability gradient along fabric thickness direction two‐set weft yarns one‐set warp yarn. strong one‐way transport capacity 984%, short droplet time 4 s. In addition, leads to an evaporative cooling effect body, resulting 1.6 °C compared most used cotton fabrics, exhibiting excellent wet‐heat transfer responsiveness, ensuring comfortable microclimate between skin environment. facile scalable method presented here paves way design fluorine‐free, robust, comfortable, wearable fabrics.