XL fits the Best - Measurements: 37” Ribs 43” Chest. I have a large chest and this helped knock down the appearance while making it so I can still breathe and live my life. I can exercise and work out in this without feeling like my lungs are collapsing. I definitely could not size down comfortably to get flatter. XL did the best to actually reduce the appearance of my chest. Getting it back off was a bit of a struggle, but the 2x was too big to actually reduce my chest. It does the job, and like any compression garment, you feel the compression, but not in a way that made me feel claustrophobic.

I'm a medium in shirts and I got a medium and it fits really good. I'm fairly chesty and it gives me a nice flattened look but I can still breathe! I've tried other binders that make me look really flat but they are impossible to get in and dig into my underarms. With this one the front part doesn't have a lot of stretch so it flattens but the back and straps stretch so you can get it on and off easily.

I mostly use Transtape for binding but this compression top works great when I don't have time to reapply or I'm just chilling at home. Its much better than a sports bra but not really a binder, kinda in between.

I bought a size L. For T-shirts I usually wear a mens M for the preferred loose fit because my chest is far from flat. Had been having issues with body changes after weight gain but I've just tried this on and it was instant relief. Very comfortable, the compression is amazing and it's not rubbing or pinching anywhere. Will order this again until it stops being made haha. Might even try chucking my small T-shirts on again. Thank you!

Got size L for 85C bra size and it's amazing for it's comfort. Admittedly I look rather "chesty" in male comparison, but for this comfort and my breast size, I don't have the slightest complaint. But hey, half the men my size are fairly chesty.