I use pro wash to clean pretty much all my workout clothes. Most of which are made of moisture wicking fabric. I love these shirts, especially in black, because I do a lot of exercising outdoors and these shirts don't show sweat.
ProWash is good on a wide variety of fabrics including moisture wicking fabrics, microfiber, lycra, spandex, fleece, polyester and even natural fabrics such as cotton and wool. ProWash is specially formulated to preserve the moisture wicking qualities of tech shirts like Dri-Fit. It works very well. Some of my shirts are a couple of years old and still wick and look as good as new. ProWash is also great at getting rid of perspiration stains and odors.