I never write reviews, and there's already over 3000 steller reviews for this belt. So why bother?
Because you need to buy it.
No really. It's that good.
I'm 32 weeks into an averagely uncomfortable pregnancy thus far, but started having really bad back and pelvic pain the last couple of weeks. Getting up and down at work was getting hard to manage. Walking the dog hurt like hell. I waddled in pain everywhere I went.
I bought this, hoping it might help a little and didn't plan on wearing it all the time. BUT OMG GUYS. I wore it to work and while walking the dog a couple days, then went without it in the same situations (you know, for the sake of science). When I wear it, I can go an entire shift without my back seizing up, my pelvis feeling like a loose sack of glass shards, or waddling slowly in pain. I just feel normal. It helps far more than I anticipated. I walked my dog for HALF AN HOUR without pain, rather than two blocks. So. Excited.
Upsides, besides making you feel like your 20 week self again: 1) It's smoother under clothes than I anticipated, and I wear fitted maternity shirts. 2) Comfortable material - I wear over the belly pants but the back part is on my skin, hasn't rubbed or been a problem. 3) Doesn't slip - I wear it without the over-belly band and it stays in place.
Couple of downsides that just aren't a deal, but I'll mention anyway. 1) Have to take it off to pee. Which is often. I just take the back portion off and hike the belly band up to my boobs and do my business, then reassemble. Not too difficult. 2) I read the instructions and still don't understand the extra Velcro thing. But the band fits perfectly after measuring the way they say before ordering, so whatever. 3) Takes a bit of trial and error to get it positioned well the first time, but once you do, you won't even notice you're wearing it. Other than not being in pain, that is.
Tl;dr : If you're pregnant with back and/or pelvic pain, take your measurements and buy this.