Staying cool and dry can make every session—yoga flow, tempo run, or HIIT—feel easier and more comfortable. Moisture-wicking fabrics work by pulling sweat off your skin so it can evaporate faster, helping your body manage heat during activity. Synthetics like polyester and nylon, and natural performance fibers like merino wool, are proven go-tos for this purpose, especially in lightweight knits and mesh constructions REI Co-op explains how base layers wick and dry. Below are 15 athletic brands known for lightweight,...