I read all of the glowing reviews and I'm surprised that only a few people encountered the bunching or wrinkling of the material in the back. I was so optimistic that I purchased 2 of the Squeem Compression Cinchers and 1 Vest. The Cincher runs more true to size and while firm, it is not unbearable. Here are a few of the Pros: Improves posture, Gives you a smooth hourglass figure. The cons, the wrinkling and bunching of the material in the back is uncomfortable after a couple of hours but I could tolerate it, I itch a little after taking it off I guess from the compression and where the wrinkles dig into the flesh, it does emit a faint rubber smell but people around me said it wasn't unberable, for people who run hot they could have a problem with overheating, but it was ok for me since I'm always cold. I'm optimistic that in time it will yield results but I've since ordered an authentic lace up corset with steel boning that should eliminate the bunching of the material and digging into my flesh. I didn't have any problems with the shapewear being obvious underneath clothing except in the back when the material bunched after wearing it a couple of hours. Didn't have any problems with back fat(don't have any)or any fat bulges pushing out. This can be a cheaper alternative than a traditional lace up corset if it works for you, but for me, I'm laying these aside. My Lace up corset should be here in two days so I look forward to getting back on track with my waist traning.