This thing is awesome. I love it. I am a 6'3" tall male and weigh approximately 253 pounds. It fits perfect. Not too constricting. Nice firm support. The 1st thing I noticed when I opened the little bag and pulled it out was how thick it is. The stitching is really nice and seems really durable as well. So I washed it and then tried it on. It's nice and snug but doesn't feel like it hinders any movement or breathing etc. Which is good because I'm claustrophobic. So I went in the living room to check it out in the closest mirror and even though its thick, I could feel the air from the ceiling fan on my skin through the shirt. I'd have no problem wearing this thing all day, and I intend to. I can't wait to wear it under a nice dress shirt. Its slimming, comfortable, offers control if you need it. If you need support to work out, get it. You have loose skin from weight loss? Get it. You have man boobs and you'd like your chest to look more proportionate to the rest of you? Get it. If you're kind of on the fence about size, maybe this will help. I can wear a 1x tshirt and it fits me slim. Not tight, just comfortably slim. I can also wear a 2x shirt and it fits slightly loose. So I'm kind of in limbo land depending on the manufacturer of the garment. So with this compression shirt I ordered a 2x and it fits perfect. Length is perfect too. It comes down about halfway of my buttocks. It takes effort to get into the shirt but it's a compression shirt. That's part of the fun. I was able to get it on over my head and didnt have to step into it as they reccomend. I think that has more to do with your physical shape, size, and condition. This is the longest by far review I've ever written. I hope it helps someone out there that feels like they need one of these shirts. I recommend this shirt and I'd definitely buy from these guys again.