Gym In A Box®

BodyTone StimFit™ Power Shirt

Regular price $699.00 Sale price $349.00
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CHRIS CUOMO’S FAVORITESGYM IN A BOX®

BUILD A STRONGER-LOOKING UPPER BODY

  • Activate arms, shoulders, back and abs for a firmer, more defined upper-body look.
  • Adjust independent channels and intensity to suit your comfort.
  • Complete a wireless 15-minute session without a gym setup.

Choose your size and train your upper body on your schedule.

U.S. PATENTED • AS SEEN ON TV • SHIPS FROM BEVERLY HILLS

NOT A REGULAR WORKOUT SHIRT.

A HIGH-TECH UPPER-BODY ACTIVATION WEARABLE.

BodyTone™ integrates 10 activation pads and independent channels for the arms, back, shoulders, abs and core — not ordinary activewear.

BodyTone StimFit™ Power Shirt.

Wearable upper-body muscle activation with patented ToneUp15® StimFit Technology.

Target your arms, shoulders, back, abs and core with 10 integrated activation pads in convenient 15-minute sessions.

How It Works — In Plain Words

The BodyTone StimFit™ Power Shirt integrates 10 activation pads across your arms, shoulders, back, abs and core. The patented ToneUp15® StimFit signals cause your muscles to contract on their own — like doing push-ups, rows and crunches while you relax. Mist the contact pads and skin with water, wear the shirt snugly, select a program and gradually increase intensity. The contact-detection safety feature only activates with secure skin contact. Use in 15-minute sessions with consistent daily use. Individual results vary.

How This Technology Helps You

  • Where it works: Arms, shoulders, back, abs and core.
  • What it does: Integrated pads deliver adjustable ToneUp15® StimFit activation to upper-body muscle groups.
  • What that means for you: You get targeted upper-body muscle engagement in a 15-minute wearable session.

Simple routine: Mist the pads and skin, wear the shirt snugly, then choose your program and intensity.

Specifications

  • 10 strategically positioned activation pads
  • Targets arms, shoulders, back, abs and core
  • Multiple programs with adjustable intensity
  • Independent channels
  • Wireless and rechargeable controllers
  • 15-minute sessions
  • Hands-free, no wires or gel pads
  • Unisex sizing S–3XL; see size chart

What’s Included

  • BodyTone StimFit™ Power Shirt (with integrated activation pads)
  • Wireless controller(s)
  • USB charging cable(s)
  • User guide

How to Use

  1. Charge the controller(s) fully before first use.
  2. Lightly mist the contact pads and your skin with water.
  3. Wear the shirt snugly for secure skin contact.
  4. Power on, select a program, then increase intensity gradually.
  5. Complete the 15-minute session.

Contact-detection safety: The shirt only activates with secure skin contact.

Care and Safety

Hand wash according to care instructions using a mild detergent, no bleach; remove controller(s) before washing.

State-of-the-Art Muscle Technology—Designed for Real Life

GYM IN A BOX® brings professional-inspired upper-body activation into a wearable shirt you can use at home — without the gym commute or studio fees.

Add to cart — activate your upper body in 15 minutes today.

IMPORTANT SAFETY INFORMATION

Adult use only. Do not use during pregnancy or with a pacemaker or implanted electronic device.

CONSULT YOUR DOCTOR: If you have a medical condition, an implanted device, or any concerns about whether this product is appropriate for you, consult your doctor 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.

PATENTED TECHNOLOGY • CREATED BY CRISTIANI'S BALANCE FITNESS & NUTRITION, LLC

Our proprietary wearable technology is protected by U.S. patents, including U.S. Utility Patent No. 11,925,799 B2 and U.S. Design Patent No. D846,836 S.

GYM IN A BOX® USA | ToneUp15® StimFit Technology

Designed and developed in the USA • Established 2015.

Patented wearable fitness, beauty and recovery technology—designed for powerful routines that fit real life.

GYM IN A BOX® combines portable design with ToneUp15® Pulse Body StimFit Technology to support targeted muscle activation and convenient self-care at home, at work or while traveling.

Choosing Your GYM IN A BOX®

What is GYM IN A BOX®?

GYM IN A BOX® is a Beverly Hills–based wearable fitness and beauty technology brand founded in 2015. Our portable systems are designed to support muscle activation, toning, performance, beauty and recovery without requiring a traditional gym setup.

What is ToneUp15® Pulse Body StimFit Technology?

ToneUp15® Pulse Body StimFit Technology uses controlled electrical stimulation to create muscle contractions in the targeted area. Intensity is adjustable, so you can begin low and increase gradually according to the instructions supplied with your product.

Which product should I choose?

  • Abs, waist and core: Choose one of our StimFitBelts™.
  • Multiple body areas: The 5‑in‑1 Full Body Muscle Booster Performance System™ targets the abs, arms, legs, calves and glutes.
  • Wearable apparel: BODYSCULPT™ Pants, GluteMaster Shorts, the BodyTone StimFit™ PowerShirt and BodyTone PRO™ PowerSuit provide integrated activation zones.
  • Beauty and self-care: Explore FACETONE™, LUMILUXE™, iGLOW™ and ULTRAFIRM™.
  • Recovery: Explore VitalStep™ and our sports-therapy systems.

Each product page lists its target areas, modes, intensity levels, sizing and session time.

Are the products unisex?

Yes. Our fitness wearables are designed for adult women and men. Apparel and belt sizing varies by product, so always use the size chart on the individual product page.

How do I choose my size?

Our apparel generally runs true to size. Measure yourself and compare your measurements with the size chart on the product page. Do not choose a smaller size merely for extra compression; the activation zones must sit correctly against the body.

Using Your Device

How long is a session?

Many ToneUp15® routines are designed for approximately 15 minutes. Some products have different programmed session times, including BODYSCULPT™ Pants. Follow the instructions provided with your specific device and do not exceed the recommended use.

How often can I use it?

Follow the schedule in your product instructions. Start conservatively, allow your body to adapt and avoid repeatedly stimulating the same muscle group beyond the recommended session time.

Does GYM IN A BOX® replace exercise?

It is designed to complement an active lifestyle and make targeted muscle activation more convenient. It is not a substitute for all movement, resistance training, balanced nutrition or medical care.

Is it intended for weight loss?

No. Our StimFit devices are not intended to produce weight loss. They are designed for fitness, muscle activation, toning and wellness support. Healthy body-composition goals still require appropriate nutrition, movement and lifestyle habits.

Is the sensation a vibration?

The tingling or pulsing sensation comes from electrical stimulation and the resulting muscle contractions. It is not simply mechanical vibration. Begin at the lowest intensity and increase gradually only when the device is positioned correctly and feels comfortable.

Why do the contractions feel weaker than before?

First check the charge level, controller connection, placement and skin contact. For products that require conductive contact, lightly moisten the appropriate contact area with water as directed—never use oils or lotions beneath the activation pads. Increase intensity gradually within your comfort level. If the issue continues, contact customer support with a short video or photo of the setup.

Why does the device not pulse when it is off my body?

Many of our systems include load detection and will not activate properly unless the contact areas are positioned fully against the skin. This is a safety feature, not a defect.

How long should I charge the controller?

Unless your product instructions state otherwise, allow approximately 90 minutes for a full charge before first use. Use the supplied charging accessories and keep controllers away from water.

Can I wear it while working, relaxing or traveling?

Many customers use our wireless wearables while working from home, relaxing or traveling. Use the device only where you can remain aware of the sensation and stop safely. Do not use it while driving, sleeping, bathing or performing any activity where involuntary muscle contractions could create risk.

Safety and Care

Who should not use electrical-stimulation products without medical clearance?

Do not use during pregnancy. Do not use if you have a pacemaker, defibrillator or another implanted electronic device. Ask a licensed healthcare professional before use if you have metal implants, recent surgery or injury, epilepsy, heart disease, cancer, diabetes, impaired sensation, a serious medical condition, or any concern about whether electrical stimulation is appropriate for you.

Where should I not place the device?

Use only on the body areas specified in the product instructions. Do not place stimulation across the chest, on the front or sides of the neck, on the head, over broken or irritated skin, or on areas with reduced sensation. Stop immediately if you experience pain, burning, dizziness, skin irritation or unusual discomfort.

Are these medical devices?

GYM IN A BOX® products are consumer fitness, beauty and wellness products. They are not intended to diagnose, treat, cure or prevent any disease or medical condition. Results vary.

How do I clean wearable apparel and belts?

Remove all controllers and electronic components before cleaning. Hand wash only when permitted by the product-care instructions, protect snaps and electronics from moisture, and air dry completely. Never place controllers in water, a washing machine or a dryer.

Results, Orders and Support

When will I see results?

Results differ based on the product, placement, intensity, consistency, activity level and individual body. No specific result or timeline is guaranteed. Correct setup and consistent use according to the instructions matter more than using excessive intensity.

Where do orders ship from?

Orders ship from Beverly Hills, California. Free U.S. shipping is offered, and tracking is provided when your order ships. Most U.S. deliveries arrive in approximately 5–7 business days, although carrier delays and remote destinations can take longer.

Can I pay in installments?

Eligible purchases can be split into interest-free installments through the payment options displayed at checkout. Approval and availability are determined by the payment provider.

What is the return policy?

Eligible regular-price items may be returned within 30 days when unused and in their original packaging. A return authorization is required. Sale, clearance, promotional and discounted purchases—including orders placed with an additional discount code—are final sale. Please review the current Return Policy before ordering.

Can I exchange an apparel item for another size?

Eligible unused apparel may qualify for a size exchange, subject to availability. Customers are responsible for return shipping. Contact customer support before sending any product back.

What should I send customer support if I need help?

Include your order number, product name, a description of the issue and a clear photo or short video showing the controller, placement and connections. This helps our Beverly Hills support team resolve setup questions faster.

GYM IN A BOX® — The original since 2015. Patented ToneUp15® Pulse Body StimFit Technology. Designed in Los Angeles and shipped from Beverly Hills.

Always follow the instructions supplied with your individual product. This FAQ provides general information and does not replace product instructions or professional medical advice.

Customer Reviews

Based on 3 reviews
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Sam
NO MORE BACK PAIN This technology is legit

I got this shirt by GYM IN A BOX a few weeks ago and already lost 2 inches off of my love handles and my BACK PAIN IS LITERALLY GONE! I assume it is from the contractions caused by the toning technology boosters, it is insane. Back is already much stronger and also works great on my biceps. Absolutely recommend this power shirt, I'll order the pants as well

A
Antonio
No more back pain

Been using this smart shirt by GYM IN A BOX for 3 weeks and the back pain I was suffering from almost 10 years is COMPLETELY GONE! This muscle stimulation technology is mind boggling I never thought I would find anything that helps me relieve the pain. Plus I got stronger muscles and less fat, awesome side effect! Pure magic . So happy!! Best purchase I ever made and so much cheaper than the chiropractor!!

S
Seth
Got it as soon as it dropped

This shirt is the GOAT, the contractions are so strong you could never achieve this kind of muscle contractions in a conventional training session in the gym . It’s amazing fir everyone who wants to bring their muscle tone and fat burns to the next level . 5 stars and more

Customer Reviews

Based on 3 reviews Write a review