AATCC 197-2022, Vertical Wicking of Textiles, sets out a test procedure for measuring the height to which liquid water rises in a fabric held vertically. The specimen is suspended with its lower edge immersed and the progress of the liquid front is observed over a defined period, so that the wicking behavior of different constructions can be compared under the same conditions. It is applied by textile testing laboratories and product developers working on moisture management and comfort performance.