I have been using this for about a month now, and it has seemed to work a little bit, I have not seen a tremendous improvement as I only use it for an hour or so a few times a week, but it has done what it was supposed to do; makes you sweat like crazy!

**UPDATE** I used my first belt for a little over a year, with that ending in some rips and a really foul smell (even after I ashed it) before I had to purchase a new one. The new ones are a bit wider (like 1/2" on each side), so for someone of my size (5'2" 120lbs) it's a bit much to get used to. However, I have found that it sturdier than the first, and I like the red. It was stated that it would come with some things, but all we got was a phone/device holder that Velcros to the belt (which we already have) so I'm not sure if that was a mistake or they need to change their advertising. All in all, we still like it and it still serves its purpose!

When I saw this product, I was nervous to buy it. "1-size-fits-most" tends to be untrue, especially in workout clothing and equipment. I've always struggled finding knee, back, and arm braces that actually fit me, since I am plus size. I almost didn't purchase this product in fear that it wouldn't fit around my stomach, but I am really glad that I did! It fits with plenty of room to spare, which was a pleasant surprise. If you are weary about the size, I wear size L-XL, and it fits around my midsection with probably 10 inches to spare. I have a pretty bad back, and have struggled with back braces in the past, due to them either not fitting or being really uncomfortable. While this isn't a brace and isn't meant to be a brace, it provides great support in my lower back.
I also was amazed at how much I sweat under the belt. I didn't really buy into the positive reviews, because I thought that it wouldn't make a difference. But it does a great job of making you sweat in you mid section and providing lots of support during your workout. The material is very comfortable, and flexible enough not to hinder your workout. My only issue with the material is that it does irritate my stomach a little bit, but I have very sensitive skin, so I just need to wear it under my shirt.
My biggest issue with the Reformer belt is the velcro. It has extremely strong velcro to hold it together, which is great during my workout so it doesn't come undone, however it is really hard to take it off. I wish it had a small tab to make it easier to pull off. It's just a small issue, but it is a little bit frustrating fighting with the tight velcro after a long workout. The other thing is that I have big hips and chest, so it is a little bit too wide to fit comfortably between the two. It sits a little awkwardly on my hips, but it's not enough to make me not wear it.

I can't really give viewers a great idea of how this product work because I've only been using it for a few days, but I can say this product IS not for wearing under clothes to look slimmer and it states on the packaging that it's for work out or short term purposes only due to the material on the inside of the belt and may cause irritation. (should be worn only 2-3 hours at a time) It is thermal so it heats up a little bit to cause sweating which will help you melt of the unwanted sweat. This is a great product and I'm glad I bought it!! I give it 4 stars only because I haven't had it that long.

I'm a gym rat so don't read this if you aren't and want to see how this will work for you. I wear this while working out most days (I take it off on heavy lifting days that I wear a squat belt). They do slide a bit so I end up in the bathrooms 2-3 times during my workout to adjust it but I drink 40 oz of water duirng my workout so it's not a bad thing. These are not miracle workers. They are just sauna belts. They do heat up your midsection which can promote fat loss (like a sauna) but for the most part they just pull water off of your midsection. For ladies, I would recommend putting it a little lower so it sits on your hips as well which will help trim your transition from your upper hips to your belly. Also, there are not waist trainers so if you are looking for a waist trainer (a cheaper version and take off of the corsets of old), this is not it. This works best b/c I workout with it. Make sure that you WASH it and air dry it and do not leave it on too long or you will end up with a rash and redness. Also, if you workout vigorously (me), wear black shorts b/c the sweat pours out the bottom of this thing and makes you look like you peed your pants. It's funny but true. Do not put it too tight while working out of your disable your breathing and you will probably make yourself sick to your stomach. I have quite a few of these and I wash them once a week, set them out to dry, and grab one for each workout day. The days that I do heavy lifting and need a lifting belt, I put this on during my 15 minutes of cardio afterwards. FYI: I do a routine that most fitness models do and we don't do tons of isolated ab work. Your abs engage when you do cardio and lifting if you use the right form. I am telling you this so the ladies on there will understand that too much ab work actually bulks your abs. You should have strong abs from your workout, not doing 200 situps. I rarely even touch ab machines. I do ab work about 2-3 times a week and it's 1-2 exercises only. The rest is abs engaged during other exercises. So don't get discouraged is you hit up ab machines but are getting thicker and don't see your abs. Work on full core strength and burning fat on top of the abs. That's where you start to see cuts. This belt may help you along the way.

I am a 39 year old Hispanic who likes to eat delicious foods. Problem is it catches up with you. I've trimmed down from 234lbs to 159lbs. The last ten pounds were the hardest and working on my problem area, my stomach, created a challenge. I purchased the Waist Trimmer Ab Belt and love it for the following reasons: (1)-There is NO foul odor after use, (2)-The material does not chafe your skin, (3)-The belt is easily adjustable and fits under your shirt without deforming the contour of your body, (4)-The product holds up under intense heat and long runs, (5)- Great price. I run 7 miles every other day in intense Los Angeles heat. This product holds up and I'm seeing results in my stomach. Yes, I still eat a lot but my stomach doesn't show it. Buy with confidence! I did.