I purchased the Zion Orange color of this shirt despite my computer screen making it look more pink than orange. The color is great, but this shirt is significantly looser and boxier that most other North Face shirts I have owned. At 5'6" and 135 I have a narrow waist and there is a lot of extra material down there even though I ordered a small. The shoulder seams also come down a bit further (1" on each side) than most similar shirts I have purchased.
If you're headed to an extremely hot/humid location the loose fit is perfect. If you want to look cool downtown, you might want to go down a size.