I absolutely love the Four-Way Tank! The fabric has enough compression to feel supportive and smooth without being uncomfortable, and I find I don't need to wear a bra with it (which is a huge plus).
What I like most is how versatile it is. I've worn it casually with leggings and sneakers, but it also looks great with jeans or a skirt when I want something a little more put together. The fit is so flattering, stays in place, and holds up well throughout the day!
For reference, I'm 5'8", 135 lbs, and the small fits perfectly. It's become one of the pieces I reach for most often because it's comfortable, easy to style, and works for so many different situations!