This is a very good base layer or as a pure athletic garment!
Made of polyester it is plenty stain and scent resistant for a good value price.
My main problem with this is that the arms have tiny holes that your skin breathes though, well the hairs on my arm get in the holes some times pulling them..
I very much like this model it is a nice improvement of the older c2000 version.
If you are muscular they looks bad ass if not they will just look lumpy or skinny depending on your build.