Let me start by saying this shirt is like a full-body hug from a very enthusiastic aunt. The compression is REAL. I wore it under a dress shirt for a work event and suddenly my 'dad bod' looked like I actually knew what a gym was. The flattening effect on the chest area is particularly impressive - goodbye, accidental cleavage!
The fabric feels surprisingly breathable considering how much it squeezes. I didn't feel like I was suffocating during normal daily activities, though I did get some odd looks when trying to put it on in the morning (pro tip: do this alone unless you want your partner to witness what looks like an intense wrestling match with spandex).
Now for the not-so-great parts: SIZING IS TRICKY. Like several reviewers mentioned, this runs small - painfully small. If you're between sizes, go up. Way up. My first attempt resulted in what can only be described as a compression shirt turtleneck situation where it got stuck around my ears.
The quality seems solid - no loose threads or weird seams poking you where they shouldn't. It stays put once you finally conquer the battle of getting it on, though removal at the end of the day does feel slightly like being shot from a slingshot (in a weirdly satisfying way).
Would I buy again? Yes, but only after carefully studying their size chart and maybe ordering two sizes to be safe. It's pricey for what it is, but when you need that extra confidence boost or back support, it delivers where other brands have failed.