"Zip up tee" is pretty close. The fabric is quite light, perhaps barely heavier than a heavy-weight t-shirt. This is basically what I was hoping for, so I am completely satisfied in that regard. Cotton is not my choice for longer backcountry trips or as a midlayer, but this fabric is very comfortable for wearing around casually or for a quick dayventure. The very light weight makes it better for summer or indoor use. I'm 6'2, approx. 195lb, 42" chest, 35" waist and I buy almost everything in large. Large was a good fit for me here. The cut is a bit slim, but certainly not skin tight. For my build, the sleeves are just about the perfect length when used normally, but are a bit too short to easily/comfortably use the thumb holes. I would prefer it without the thumb holes. The zipper feels just a little stiff to open/close and when combined with the very light and stretchy fabric, adjusting it is more of a 2-handed task. Some YKK zippers that I have open/close a little easier and might have been a better choice in that regard. Overall the minor nitpicks do not significantly detract from the overall awesomeness of this hoody. Great product!