This binder is super comfortable (as far as binders go). I can still breathe freely and can move around a little. The fabric is breathable too and doesn’t make me super sweaty. It also doesn’t irritate my skin. Mine did get discolored really easily though, the first time I washed it (hand wash, hang dry) it got weird red and brown splotches. I also don’t like that the bottom of the binder hangs out. I have a bigger chest which leaves a gap between the binder and my tummy, luckily if my shirt is tucked in it’s not noticeable. I like this binder as a first time buy and it definitely makes me flat, but I wouldn’t buy it again. Between the discoloration and the gap, it looks ugly, and I’m afraid that it will stretch with all the nylon.