This is the finest undershirt that I have found, especially for the price. Once you start wearing undergarments made from Modal fabric, you will not settle for less. The fit is exactly the way that an undershirt should fit. I bought a size medium (I am 5'7", 160 LBS, athletic build) and it feels like a custom made undershirt. I usually feel like I am wearing a straight jacket when I put on an undershirt, however, these give and stretch and they are not bulky at all. I would never wear these without something over them, they are tight without feeling tight. The V neck has never shown under any of my shirts and usually undershirts ride up and irritate my neck and are completely visible, but not these. I plan to replace all of my undershirts with these.