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MERMAID'S MYSTERY Waist Trimmer with Back Support Bars – Sweat Enhancing Fitness Belt for Men & Women – Premium Quality

  • Based on 17,048 reviews
Condition: New
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Availability: Only 10 left in stock, order soon!
Fulfilled by Amazon

Arrives Tuesday, Jul 28
Order within 9 hours and 15 minutes
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Color: Black


Size: L (Waistline 43"-53")


Features

  • Neoprene
  • Imported
  • PREMIUM SOFT NEOPRENE FABRIC FOR BETTER HEAT RETENTION Made with 4.0mm thick neoprene that retains heat to raise your core temperature during workouts. The Mermaids Mystery Waist Trainer belly band helps increase sweat and supports your training routine. The waist sweat band features a non-slip grid lining to stay securely in place during any activity.
  • ENHANCED WAISTLINE SUPPORT Designed with curved sides following the natural waistline for a flattering fit. The sweat belt features an adjustable double velcro closure to secure the waist cincher firmly. A durable spandex belt adds compression and enhances shaping for comfortable support during wear.
  • SUPER FLEXIBLE & COMFORTABLE Made from premium, 100% latex-free neoprene thats soft, stretchy, and supportive. Its flexible design provides a snug fit without digging in or limiting movement, for all-day comfort.
  • STRONG BACK SUPPORT & POSTURE ALIGNMENT This waist training belt features 4 flexible acrylic bones for effective back support and better posture. The unisex sport girdle offers a secure fit for comfort during workouts and daily wear without digging into your body.
  • WIDE COVERAGE FOR STOMACH & BELLY This 25cm waist trimmer belt fits both long and short torsos, staying in place during movement. Ideal for waist trimmers used in ab training, powerlifting, postpartum support, core workouts, and daily wear.

Size: L (Waistline 43"-53")


Brand: MERMAID'S MYSTERY


Color: Black


Material: Neoprene


Use for: Stomach


Product Benefits: Thermal Activity


Closure Type: VELCRO


Fabric Type: Neoprene


Product Dimensions: 53"L x 43"W


Fit Type: regular


Brand Name: MERMAID'S MYSTERY


Target Use Body Part: Stomach


Product Benefits: Thermal Activity


Fit Type: regular


Fit to Size Sentiment: True


Manufacturer: Mermaid's Mystery


UPC: 786705464919


Number of Items: 1


Age Range Description: Adult


Item Type Name: waist trainer


Unit Count: 1 Count


Size: L (Waistline 43"-53")


Color: Black


Apparel Closure Type: VELCRO


Garment Size Country: United States


Material Type: Neoprene


Fabric Type: Neoprene


Apparel Fabric Stretch: High Stretch


Apparel Fabric Weight Class: Medium Weight


Product Care Instructions: Hand Wash Only


Item Dimensions L x W: 53"L x 43"W


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Jul 28

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Mermaid's Mystery Waist Trimmer Helps Give Amazing Slimming and Posture Mermaid's Mystery Waist Trimmer Helps Give Amazing Slimming and Posture
Color: Black Size: M (Waistline 31"-42")
Mermaid's Mystery Waist Trimmer size Medium I recently purchased the Mermaid's Mystery Waist Trimmer, and I must say, it has exceeded my expectations in every way! After trying out a cheaper alternative that didn't deliver, I decided to invest a bit more for better quality, and I’m thrilled that I did. One of the first things I noticed is the material. The neoprene is fantastic—it not only snatches my waist but also promotes sweating more effectively than other materials I've tried. As someone who has struggled to break a sweat during workouts, this waist trimmer has been a game-changer. The extra sweat helps remove toxins from my body, and I feel so much better after each session. Additionally, I’ve always had troubles with my posture, but I’ve noticed a significant improvement since wearing this waist trainer. After taking it off, I feel my posture has been corrected, and my waist looks slimmer too! The design with the Mermaid Mystery wording on the back is a clever touch; it helps me easily identify the center of the waist trimmer, making it a breeze to put on and line the wording with middle part of my back. I've found this product to be great not just for workouts but also for daily wear—even while eating! It has a way of gently reminding me to maintain proper form, and I notice I get fuller faster when it's on. The extra straps on the Waist Trimmer help to achieve that coveted hourglass shape, which is a fantastic bonus. Another aspect I appreciate is how easy it is to maintain. I prefer handwashing it, and the attached fabric loops make it simple to hang dry after washing. Just a tip—make sure to wash it after each use to avoid any breakouts from dirt or toxins. If you’re considering wearing it for extended periods, I recommend adjusting the tightness to ensure comfort, especially during long hours. While the sturdy Velcro does provide a secure fit, it can scratch your skin if left too close, especially when you're moving around. Overall, I would highly recommend the Mermaid's Mystery Waist Trimmer to anyone looking to slim down, improve posture, or enhance their sweat game during workouts. This product really targets those pesky belly fats, and the comfort along with the results is definitely worth the investment. I loved it so much that I bought a second one to alternate between washes! In summary, if you're in the market for a waist trainer that delivers quality, effectiveness, and comfort, look no further than the Mermaid's Mystery Waist Trimmer! It’s a fantastic addition to any fitness regimen or daily routine. ... show more
Reviewed in the United States on October 29, 2024 Reviewed in the United States on October 29, 2024 by pablo gochez

  • Help a. Lot
Color: Black Size: S (Waistline 25"-30")
This waist trimmer is very well-made and comfortable to wear during workouts. The material feels durable and supportive without being too stiff, and the adjustable straps make it easy to get a snug fit. It stays in place even during intense exercise and helps increase sweat around the midsection, which is great for cardio or strength training sessions. The added back support is a big plus—it provides stability and helps maintain good posture while lifting or doing core exercises. It doesn’t roll down or dig into the skin, which is something I’ve experienced with other belts. For the price, the quality is excellent. If you’re looking for a waist trimmer that boosts sweat, offers real support, and fits comfortably, this one is a solid choice. ... show more
Reviewed in the United States on December 7, 2025 by Kamila Chirinos

  • Easy to use
Color: Black Size: M (Waistline 31"-42")
This is my second waist trimmer, good quality, great back support, sweat adsorbent, stretches ,breathable, easy to use
Reviewed in the United States on June 8, 2026 by Nickisha Britton

  • Great Product
Color: Black Size: M (Waistline 31"-42")
As pictured and described. Good quality with good back support. Stretches and true to size.
Reviewed in the United States on March 21, 2026 by Opal

  • Doesn't ride up
Color: Black Size: S (Waistline 25"-30")
Let's be honest, this product works as a trainer and a corset. It would help support my back during exercise, as well as help with water loss from sweat around my waist. It felt secure, and unlike others I have used before does not slide upwards. I would often use it the week before height and weight to help maintain a trim waist. ... show more
Reviewed in the United States on June 13, 2026 by Kindle Customer

  • Almost perfect..ugh.
Color: Black Size: M (Waistline 31"-42")
Just used it for 3 sessions. It is comfortable and not crushing my stomach. The only problem is that there's a 1 and an half gap between the belt and the under area of my boobs. The suction of the belt is comfy and snug that it creates a little muffin top in that area. I ordered this belt cause it advertises that it covers all the abdominal area. When I put it on it barely covers the bottom of my stomach and it reaches below my under boob area. I did my measurements right and followed the size guide aswell read all reviews. I'm worried that it might create an uneven or weird shaping due to how the belt doesn't cover ALL of my abdominal area. I don't even know if I should return it or look for another one because this one feels good while exercising but that gap- that gap is causing me some unnecessary sensory discomfort. ... show more
Reviewed in the United States on June 28, 2025 by Dankiest Reviews

  • Worth it! Stop searching! Dont miss out!
Color: Black Size: S (Waistline 25"-30")
*self edited for spelling errors...new phone in the middle of the night with Lil#3 up sick was probably not the smartest time..but really is the only time and I promised to get this info out!* Best Wishes! This product is actually really great. I didnt get it for free not am I being paid or compensated in any way to write this. I actually suffer from many autoimmune diseases/issues and their symptoms. In the not too distant past the doctors put me on a steroid that I had been on long ago but this time I had some kind of allergic reaction on top of steadily gaining @ 30lbs following the 10day (cut short due to reaction) treatment..and I also broke out in a bad case of shingles. Long story short: i was a mess..and a suddenly overweight mess at that. Among other contributing factors from all this, I think the additional weight on my small frame caused an increase in the severity of my chronic pain. I previously had one of those "as seen on tv" neoprene tummy wraps which did cause a lot of sweating underneath it but with the added support for my back. But "one size fits all" really didn't compliment my smaller build and i had to make adjustmente with velcro just to make it fit snug enough to feel good. THIS product however has size options. And while according to my new, and rather disproportionate measurments, the size chart wasn't all too helpful for me but I knew my build well enough to order a small regardless. And the fit is GREAT. The main wider piece wraps around and sticks with a full width of velcro so I can make it more snug when I want or more loose when I need. But then these added stretchy belts on either side that pull out and stick to the front for additional snugness and support are just amazing! It's not some weird length or shape; it fits from just under my bust to right on or above my hips (which is fantastic for another "problem area" of mine similar to "love handles"). I would recommend this to at least two groups of people: those trying to slim down/firm up their midsection (the sweating under the wrap is a GOOD thing!), and anyone suffering any kind of chronic pain issues. This has truly been a Godsend. I haven't gotten to wear it as much as I want to...but I most definitely will be. It seems well constructed and durable without sacrificing comfort. I use a blend of essential oils in a Jojoba base on my skin underneath it for some added benefits. But all in all, the product itself is totally worth it. And the price for what you're getting--you can't beat it. I could go on but I'll spare you ..if you came looking for something like this or are at all, even in the slightest bit interested...give it a try. I highly doubt you will be disappointed (other than the disappointment in yourself for not finding it sooner!) I will come back and post "before and after" pics after a couple months and before that hopefully a review & "how to" type video on what/how I do.. Because the product is just that great. -33yr old female, 5'5" and suddenly 150lbs from a usual 120lb-130lb range ... show more
Reviewed in the United States on August 11, 2019 by RenDawSis

  • I'm so glad I bought this. Size Large is perfect at 234 pounds -5'7
Color: Black Size: L (Waistline 43"-53")
I originally ordered another brand of this TikTok set, but my package got lost. I didn’t want to spend a lot of money replacing it, so I decided to try this one after reading the reviews. Honestly, I was a little nervous at first, but I’m glad I took the chance. Shipping was super fast to my Amazon Locker, which I really appreciated. The quality is great, and the price is even better. Reviews that included size and weight were very helpful for me when deciding what to order, so I wanted to share mine as well. I ordered a large, and I’m 5’7” and 234 lbs. The fit was perfect. I’ve lost about 40 pounds, and as I continue losing weight, I wouldn’t mind buying more of these. I also feel like even if I lose another 20–30 pounds, this size will still fit comfortably. Overall, I’m very happy with this purchase! ... show more
Reviewed in the United States on March 12, 2026 by Shiquita T Hutchinson

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