Clothes made from this kind of fabric are also good for runners.
People don't realize it but the salt in sweat can rub your skin raw if you keep it next to your skin. It can cause a rash, or even, in long distance runners, scrape away the skin. Wicking clothing pulls the salt away from your skin as well as the moisture.
They can be much more expensive than ordinary fabrics though. Merino is particularly good because it's natural but has the same properties as synthetic materials.