I've used a few of their short sleeve shirts for a couple of years now for hiking, biking, and general exercise. They seem to work just as well as some of the pricier stuff I have used, so no complaints from me. I did notice an odor after a day or so of use, or if I had been sweating excessively (hey, I live in the Southeast so its bound to happen during the summer months), but again no worse than other garments.

Of note, I noticed that some of the newer Athletic Works garments are using cloth made of Repreve fibers. Repreve is a recycled yarn (post production I think, but better than nothing), so Kudos to them for spec'ing that in their garments. As much as some people hate Wal Mart, their purchasing power can help build the economies of scale needed to help these newer renewable (or quasi renewable anyway) products viable.