Updated: 01/09/2018

Slendertone Review - 5 Things You Need to Know


In my never-ending quest to find the best diet product, this week I reviewed Slendertone. We looked closely at the side effects, ingredients, research, and customer service. Then, we took hundreds of comments into consideration. To make it easier, we condensed and refined it to give you the bottom line.

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What is Slendertone?

Firstly, Slendertone is an electronic ab belt that’s an older version of the Flex Belt, designed to help you work your core without ever actually working out. Ideally, it works to improve tone and shape so you look slimmer. We didn’t find mention of a diet or cardio exercise. A newer version, Slendertone Abs5, comes with 10 programs and more than 100 intensity settings.

Bio-Medical Research is the name of the company behind Slendertone. They’ve been around for more than 50 years – impressive. We like that there’ proof it will work abdominal muscles and it’s easy to use, but read on…

Price – “Expensive”

The first thing we noticed was the Slendertone price. You may spend $150 or more for the belt. “We’re all for suggesting a product with clinical support, but affordability has to come into play,” said our Research Editor. “If this is your first step in weight-loss, it may not be the best investment.”

”Worked well for two sessions then stopped. Not sure if I got a bad one…but I am sure it was likely not worth the price,” said one user.

”For a product that is approaching the $100 dollar cost, this should be better,” one customer shared.

Others didn’t seem to mind.

“I really like this belt,” said a reviewer.

“Amazing. I will be buying another one. My husband and I share the belt but exchange our pads after each use,” a user commented.

Slendertone Ineffectiveness – “Does It Really Work?”

We were worried when we saw quite a few reviewers used the product with no difference to their core. We don’t expect it to give you a six pack by any means, but some progress is ideal, like the changes that happen when you use the Flex Belt. When reading through Slendertone Ab5 reviews, issues that came up included poor quality, sizziness and no weight-loss.

”I don’t think this has made my abs look any better,” said a user.

”So disappointing. It hurts my sides and I’ve gotten zero results,” claimed a buyer.

There were some, however, who loved their results.

“After a few weeks I’m already showing definition. Never had that before,” a happy customer mentioned online.

A user also said, “With this belt my abs are tighter. I love the result and I recommend this belt who has similar issues.”

Over the years, we’ve found it takes a small thing, like expensive price or ineffectiveness, to send customers running in the other direction. If they’re going to spend a lot of money on Slendertone, they want it to be on something they know will get the job done.

The Science – “It’s There”

Electrical stimulation does help the muscles contract, but likely not enough to get the same experience from a real workout. It also doesn’t help you lose weight, so if there is a layer of fat over the abdominal, you may not see any changes. This is the same with the original product and Slendertone Abs5.

The Bottom Line – Does Slendertone Work?

Is it time to clear the shelves of Slendertone or Slendertone Abs5? We like that there’s some clinical support and if you are already relatively fit, you may notice some changes. However, we are hesitant to suggest it to those of you trying to lose weight as it won’t help with calorie burn.

If you’re ready to lose weight, we suggest going straight to a supplement that contains clinically tested ingredients known to help support your weight-loss efforts. For even better results, use it alongside a balanced diet and regular exercise program.
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What are the ingredients in Slendertone?

The thick black belt of the Slendertone Ab toner sits comfortably on the waist. Gel pads made of hydrogel go between the belt and the skin. This substance is latex free and anti-allergenic.

What are the side effects of Slendertone?

If you overuse the product it may cause nausea, dizziness, or a strange feeling in the stomach.

How do I know if Slendertone is right for me?

Choosing the right product is the #1 question asked by DietSpotlight readers. We recommend trying any product before buying it and know that finding a product with a sample offer is near impossible - so we created our own product, Boost, with scientifically backed ingredients.

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Does Slendertone work?

The reviews on this product are fantastic. Most people can’t say enough good things about it. It seems to work as it should. It strengthens your core, helps you lose inches, and increases your abdominal stamina.

What is the price of Slendertone?

You can purchase the Slendertone Abs Toning Belt for $99.00 or the Slendertone Connect Abs Toning Belt for $199.00. The latter version connects to an app on smartphones. Prices are comparable on other websites. The gel pads are $12.99

Where can I buy Slendertone?

Get Slendertone on slendertone.com, Amazon.com, Walmart.com, Hayneedle.com, and Theflexbelt.com

How should I take Slendertone?

You can begin by using this product five times a week for four to eight weeks. Once you achieve the results you want, you can use the belt two to three times a week for maintenance. You will need to replace the gel pads after about twenty to thirty sessions.

How do I contact Slendertone customer service?

You can contact the customer service department directly at 1-800-551-2443, or you can email them at info@slendertoneusa.com

Can I return Slendertone?

There is a sixty-day money back guarantee with this product.

What are the most common complaints about Slendertone?

The one thing that people had a problem with was the belt coming apart after about a month of use.


Previous Slendertone Review (Updated September 23, 2013):

Slendertone: What You Should Know

Slendertone is an older version of the Flex Belt ab toning system. You can find our review of the Flex Belt here. Electric ab toning systems require no exercise to define abs, which is why these products are doing so well. The difference between the Flex Belt and the Slendertone is that the Flex Belt is better constructed and comes with more accessories. This product was manufactured to address the abdominal muscles of men and women. Therefore a specific Slendertone abdominal belt is marketed toward men and women. Slendertone is intended to be used 30 minutes each day, five days a week. Ideally the user's abdominal area will become more firm and toned in a matter of weeks. The Flex Belt Abdominal Toning Belt is truly an awesome advance in technology. This device is by far the most effective we have ever seen of its kind. It makes it so that anyone can exercise their abs anywhere and anytime and it does all the work for you. You can use it at work, around the house, while taking a walk, while exercising, watching TV etc. The results are astonishing – The Flex Belt is proven to work for everyone. In fact – in a clinical trial done with The Flex Belt, 100% of the participants received results in flattening, toning, and strengthening their stomach. The Flex Belt is not a gimmick – it is 100% medical science. It is the first EMS (Electric Muscle Stimulation) product of its kind cleared by the FDA as a class II medical device for direct to consumer sales. For consumers who don’t have the time to exercise or for those that may have tried to flatten and tone their stomachs through traditional exercise, this product is precisely what they’ve been looking for. It is also great for people that are in awesome shape and already have a great stomach – it will simply make it more strong and defined. The intensity goes from level 1-100. With continued use and as you get stronger, you will increase the intensity. Trust us -- This thing works! If you run the belt on a high intensity, you will feel your stomach muscles sore the next day just like you would after an intense abdominal workout at the gym. This is probably the coolest, most advanced product we have ever reviewed. You can see an amazing demo of the product by clicking here. Or keep reading…it gets better.

Product Features: Slendertone

The Flex Belt is an innovative, medical-grade technology with the extraordinary ability to sculpt a firmer, stronger and more toned abdominal area without painful, repetitive exercise routines. The makers of Flex Belt are a medical device company headquartered in Galway, Ireland with 40 years expertise designing, manufacturing and marketing EMS (Electric Muscle Stimulation) devices for medical and consumer use. Their EMS medical devices are used and prescribed in 5000 clinics worldwide. In fact, this is the same technology that physical therapists use for their patients that need certain muscles exercised. This product consists of a precisely engineered, ergonomically designed training belt that tones the central abdominal muscles and obliques for the flat stomach or ‘six-pack’ we all dream of. The company is so confident in the amazing results achieved with this groundbreaking product that they offer a full 60 money back guarantee. If you use the belt as instructed (once a day, five days a week), you will definitely see results before the 60 days are up – so this is no-lose situation satisfaction guarantee policy. We don’t think an awesome athlete and legend like Jerry Rice of the San Francisco 49ers would back the product and use it himself if it didn’t work…you can see a video clip of Jerry wearing belt on the official website – click here to go to official flexbelt website.ConceptHere's how it works: The unique construction of the Flex Belt features three pre-positioned, medical-grade Gel Pads, covering the central abdominal muscles and external obliques. Signals from the belt reach out to nerves where they are most concentrated. These nerves branch out to reach all the abdominal muscles (not just those under the pads) causing them to relax and contract naturally, working all the muscles at the same time. When wearing The Flex Belt, you will feel a mild pulsing sensation, followed by some tightening of the abdominal muscles. The muscles should contract smoothly, hold themselves in a tensed position for a few seconds and gently relax again. It is never uncomfortable – but always apparent. You control how powerful the sensations are with the intensity controller. The intensity goes from level 1-100. Like we said before, there is no chance this thing doesn’t work -- If you run the belt on a high intensity, you will feel your stomach muscles sore the next day just like you would after an intense abdominal workout at the gym. The end result is that all the muscles are worked at the same time, and no sit-ups or crunches are needed to get flatter, tighter, more toned abs. The makers of The Flex Belt guarantee results within weeks of using the system and 100% of users have reported more toned and firmer abs. All that is required is a mere 30 minutes a day, five days a week, to see results. The best part is that this 30-minute exercise doesn’t have to be in a gym, and it doesn’t have to take any time out of your day. This belt can be worn any time, allowing consumers to tighten their abs during almost any normal activity. The system is great for people of all lifestyles including casual exercisers, fitness enthusiasts, seniors, new mothers and even people with physical limitations. The belt works for everyone and all should benefit from this simple system.Click here to learn more about this awesome advancement in the world of fitness. For consumers who don’t have the time to exercise or for those that may have tried to flatten and tone their stomachs through traditional exercise, this product is precisely what they’ve been looking for. It is also great for people that are in awesome shape and already have a great stomach – it will simply make it more strong and defined. Its ability to precisely target the appropriate muscle groups is nothing short of amazing, and has opened the door to a new era in fitness. Not to mention that for those consumers who may be limited in their ability to perform strenuous exercises like sit-ups or crunches, this ergonomic approach is ideal. Consumers can incorporate this exercise regimen into any part of their day, without having to “drop everything” and suffer through crunches. It is also the perfect solution for new mothers who want to get their tummy back in shape, executives who don’t have that long to exercise each day, and even those that are in awesome shape and just want to look better. You also don’t have to worry about changing clothes while wearing it because it will fit under your shirt and there is no perspiring during a session. On the official website, you will see an awesome video that shows you everything about the product, including some detailed visuals of how it works the muscles. You will also see that the belt is used by several celebrities, approved by the FDA and has clinical studies showing that: 100% of the people reported their abs are stronger and more toned, the average person received a 49% increase in strength and a 72% increase in endurance. The belt is lightweight and “breathable,” and has different training programs built in if you would like to use them. Or you can just manually adjust the intensity yourself. This innovative method for exercising the stomach muscles is also very easy on the back, and will be a welcome change from those who have sustained injuries through laborious sit-ups. While the popular expression “no pain, no gain” is still often used by reluctant exercisers, this product achieves a very efficient, targeted abdominal workout without the need for any suffering. We definitely recommend trying the Flex® Belt -- no one is ever disappointed.Click Here to visit the official website and get yours.CostThe Flex Belt is $199 for one belt – a VERY affordable price for this type of medical grade technology and a guaranteed more attractive stomach. If you order an additional belt for a friend or loved one, you will receive a 25% discount on the second belt. In fact – all additional belts after the first one are priced at 25% off. 1 Flex Belt = $199.99 2 Flex Belts = $349.00 (a $50 savings) 3 Flex Belts = $499.99 (a $100 savings) 4 Flex Belts = $649.99 (a $150 savings) A lot of people order an additional belt for their spouse so they can wear them together. If you have a friend that you exercise with, we recommend going in together on an order and taking advantage of the $50 discount off the second belt. We like that there are no hidden costs and all orders come with a more than fair 60-day money back return policy. Another awesome benefit is that The Flex Belt comes with a 2-year extended warranty, so you can get your belt replaced should anything happen to it….no questions asked. We have checked the customer service out and it is great. They are always available during business hours and will help you with anything you need.Website In FocusThe official website is awesome! It is visually stunning and leaves nothing to the imagination which is helpful when purchasing a $199 item. It is informative without being distracting. Make sure you check out their testimonials and press page. The Flex Belt has been praised by celebrities and enthusiastically reviewed by these major publications: Flex Magazine, Weight Watchers, Glamour, Cosmopolitan, Men’s Fitness and many more…In Fact – this site is sponsored by Flex & Fitness Magazines and all orders come with a free 1-year subscription should you want it.Click Here to visit the official website – you can’t miss this one.

Advantages of Slendertone

  • Helps tighten, tone and strengthen the abs anytime or anywhere you want to use it.
  • Clinical trials show that 100% of users report it works.
  • Backed by major celebrities, doctors, and approved by the FDA as a medical grade device available to consumers.
  • Great for Casual Exercisers, Fitness Enthusiasts, Executives who don’t have time to make it to the gym, Seniors, New Mothers, People with physical difficulties or anyone that wants more attractive abs.
  • Comes with a 60-Day Money Back Guarantee!
  • 2-year extended replacement warranty.

Disadvantages of Slendertone

  • The Flex Belt is only guaranteed for 60-days if you buy it on the official Flex Belt website -- there are no returns if you buy it thru a reseller or a store.


Most people know that good things can only come after they have been earned through blood, sweat and tears. While this may be true in many cases, the Flex Belt is definitely an awesome exception. With less free time and busier lives, people around the world are losing the opportunity to regularly exercise without sacrificing their daily activities. The Flex Belt is designed to alleviate that issue by providing an easy, comfortable and completely effective product that provides exercise and convenience simultaneously. This anytime, anywhere belt has been scientifically proven to provide results within weeks. The belt works for everyone and we can’t really imagine who can’t benefit from it: new mothers who want to get their tummy back in shape, students, executives who don’t have that long to exercise each day, and even those that are in awesome shape and just want to look better. You can also use the belt anywhere and anytime: while working, doing house choirs, shopping, while at the gym, reading, watching TV, studying etc…. We feel that $199 is not only a fair price for a guaranteed more attractive stomach, but you will be able to use the belt for years to come. This is an awesome product that provides a no-lose situation in trying it. We recommend ordering this one right away. In the unlikely situation that it doesn’t work for you, we encourage you to simply take advantage of their very cool 60-Day Money Back refund policy.Click here to visit the official website and get yours – you won’t be disappointed.
Summer Banks Dietspotlight Author
About the Author:

Summer Banks, Director of Content at Dietspotlight, has researched over 5000 weight-loss programs, pills, shakes and diet plans. Previously, she managed 15 supplement brands, worked with doctors specializing in weight loss and completed coursework in nutrition at Stanford University. full bio.

10 Slendertone Reviews

  • karen morgan

    I have replaced the pads twice in 3 months due to them turning black, is this normal?

  • norman

    how much is the price

  • bad side effects of the slendertone belt
    nancy irgang

    I want to know if there are any bad side effects of the slendertone belt

    • Your Name

      I used the slender tone belt,I did a 30 minute session followed by sit ups,the following day my stomach ached. It was like flu aches,nausea and cramps,it passed. I thought it was may be because I was ill but I did it again and had the same thing but not as bad. Be careful not to do over do it straight away.

  • what are the ingredient

    what are the ingredient?

    • Maribel (Editor)

      Hi Dennis, Slendertone is an electronic ab belt, its supposed to work your core, so you look slimmer. If you’re looking to slim down and burn fat, an different option to keep in mind is Pronabolin.

  •  Product did not work
    stephane (Verified User)

    I purchased Slendertone through advertisement on Japanese TV here in Tokyo,but I never had the chance to test the result of that “wonderful product”, after a couple of weeks it stopped working….I has no idea what happened but my investment ended up in the garbage can.

    My advice keep your money and stick with good old sit ups & physical exercises.

  • I have not see any difference in my measurements
    verna rapchuk (Verified User)

    So far I have not see any difference in my measurements
    I have been using it as required .
    In fact I think I am flabber .

    DANI (Verified User)


    • nick

      not having a balanced diet isn’t the only factor