I bought the long sleeved version of this item and i'm really happy with it. Very comfortable to wear, sleeves don't ride up your arms. Keeps you warm and cool as needed. The fit is just right and works well as a base layer or just on it's own. Packs away to nothing and is really light.
One bad thing is that it is a little on the expensive side.
Hey, it's still well worth buying.
(Written by: marktrik)