I've been using the same few binders (mostly from Underworks) for around a decade now, and they're finally starting to fall apart, so I was on the market for a new binder that's well-made and affordable. I did some research and decided to take a chance here after reading some positive reviews. It took a little bit to get to me due to some things that had nothing to do with the company, so when it arrived, I was pretty stoked. It fits great, and even though it's way tighter than my old, raggedy binders, it's never been uncomfortable or made it difficult for me to breathe. My chest is a lot flatter in just the way I was hoping for, and it looks good under T-shirts (it doesn't roll up like my old binders have started to, so the flat chest seems natural.) It's got plenty of room under the armpits for me, so no scratchy chafing or anything like that. For your own reference, reader, I bought a large and my bra size is a 32D. The sizing on the website was accurate and helpful in getting me the size I needed; it'd been so long since I bought a binder that I had no idea what size to get, but it looks like I did a good job. Anyway, great product and I'll buy here again if I decide I want more than one decent binder in my rotation.