Gym In A Box®

MagicTone StimFitBelt™ | Electronic Abs Toner & Waist Sculptor

Regular price $389.00 Sale price $199.00
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FREE SHIPPING FROM BEVERLY HILLS, CA. Shipping details.

SIZES S–2XL — FITS WAIST UP TO 125 CM (49 IN)

GYM IN A BOX® L.A. — ABS TONING BELTWORKS LEADERS

ACTIVATE YOUR CORE. MAKE 15 MINUTES COUNT.

Meet the MagicTone StimFitBelt™: our classic black corset-style waist belt, designed for a focused core-activation routine with its signature controller and adjustable fit.

WHY MAGICTONE STANDS OUT

  • Classic abs and core activation
  • Corset-style waist and back support
  • 15-minute routine
  • Sizes S–2XL; fit guidance up to 125 cm (49 in) waist
  • Patented ToneUp15® MicroCurrent Body Pulse Technology

Choose the belt that suits your routine. Explore the full GYM IN A BOX® Abs Belt Collection, including UltraTone™ Core Master, SlimCore™ Tone, Sculpt & Sweat Belt, and ThermaLuxe™ Smart Beauty Sculpt Belt.

Designed in L.A. | German engineered

Explore the collection at ShopGymInABox.com.

What is GYM IN A BOX®?

GYM IN A BOX® is wearable muscle-activation technology from Beverly Hills, since 2015 — and As Seen On TV. Our belts, apparel and devices run on patented ToneUp15® Pulse Body StimFit Technology: wireless, no gel pads, worn on bare skin. Home, work or travel — no gym required.

How does it work?

Press the button on the wireless controller. Gentle microcurrent pulses make your muscles contract on their own — real muscle work while you go about your day. Modes are preset pulse patterns, intensity levels are strength: start low, increase gradually.

How long is a session?

One toning session is 15 minutes — that's our recommended usage for one session, and it's what ToneUp15® is built around. Your device shuts off automatically when the session ends. Some wearables run longer cycles — the PowerPants and the PowerShirt, for example. You can use your device for up to two sessions a day; just follow the instructions for your specific device.

Do I wear it over clothing?

No — the devices need direct skin contact, so wear yours on bare skin, never over clothing. Once it is in place, your clothes can go over the device.

What does it feel like?

A tingling, pulsing sensation as your muscles contract — the stimulation working, not vibration. Start low; increase gradually, only when the device sits correctly and feels comfortable.

Who should not use it?

For adult use only. Do not use during pregnancy, and do not use with a pacemaker, defibrillator or another implanted electronic device — and never while driving, sleeping or bathing. With any medical condition or concern, consult your physician before use.

GYM IN A BOX® consumer fitness devices are intended for fitness and wellness use and are not intended to diagnose, treat, cure, or prevent any disease or medical condition. Individual experiences and results may vary.

How do I choose my size?

Use the size guide on each product page. SlimCore™ is one size, fits S–XXL. Do not size down for extra compression — the zones must sit correctly against your skin.

How long do I charge it?

About 90 minutes for a full charge before first use, using the supplied accessories. Keep controllers away from water.

Why don't I feel it working?

Check the charge and placement, and make sure the contact areas sit fully against your skin. Many systems have load detection and will not activate otherwise; that is a safety feature, not a defect. Still stuck? Email us a photo or short video of your setup.

How do I clean my wearable?

Remove the controller and electronics first. Hand wash only where your product's care instructions allow, keep electronics away from moisture, and air dry. Never put a controller in water, a washing machine or a dryer.

What are the shipping times?

FREE U.S. shipping. Orders ship from Beverly Hills, California — most deliveries arrive within 5–7 working days, with tracking when your order ships.

Can I pay in installments?

Yes — shop now, pay later, with interest-free installment options at checkout.

What is the return policy?

Eligible regular-price items may be returned within 30 days, unused and in their original packaging. A return authorization is required first, and a $39 return-processing fee applies (restocking, repacking and outbound shipping). Stated plainly: sale, clearance, promotional and discounted purchases — including orders placed with a discount code — are final sale. Once your return is authorized, we will give you the return address and instructions.

How do I contact you?

Email our U.S.-based support team at info@gyminabox.la.

Customer Reviews

Based on 117 reviews
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Debbie
StimFitBelt – Waist & Abs

I bought this in November 2025. I use it several days a week. The product is strong and durable. It took me some getting use too! I wear it and after 15 minutes I feel a sensation and I use products I purchased from Gym in a Box to help with my work out. I wear it when I walk and I feel stronger

Thank you so much, we are so happy to hear that!

P
Pearl D
Beyond fabulous customer service

I will always pay more for a product when it has as great customer service as Gym in a Box. Ever since I learned about them they have always replied in a timely fashion.I bought two products..favelift mask and the belt. The belt seemed to grow weaker after a few months and when I told them about it, they sent me a replacement belt wiithout question.Can't recommend them enough.The products are really great.The customer service even better..ut cant be beat and that says a whole lot in this day and age. Thanks staff. Happy holidays to you all..

Thank you so much, we are so happy to hear that!

A
Ann Marie Joachim
Annmarie

I absolutely love Gym in a box. I’m already noticing a difference im tighter. It’s amazing. The company is so helpful everyone cares so much. ❤️❤️

Thank you so much, we are so happy to hear that!

S
Shelly Claiborne
Lowest price Great results!!!!

Omg I order this for my sister, daughter and myself and this is the best product that money can ever buy!!!!!!

Thank you so much, so happy you love it!

S
Savannah
Better than Weightloss drugs or a Tummy Tuck

I have been using this ToneUp 15 FitBelt by Gym in a box for 3 months now. I am literally obsessed as it does reduce waist size like no other product plus the massager function is so rejects and makes me feel so much better .I used weightloss drugs before but I hated taking this drug and also the meds don’t give you muscle tone or definition like this here… this is so much better. It’s natural and basically just like working out for hours every day- when you’re actually not, you just turn on the device…AWESOME

Customer Reviews

Based on 113 reviews Write a review

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