Cookies on the Merrithew website
Merrithew has updated its cookie policy. We and third-parties use cookies on this site to improve your experience, personalize content, optimize your shopping experience and to show you relevant advertising. By continuing to use this site you give consent for all cookies to be stored locally on your computer or device. To learn more about cookies and how to manage them visit our cookie policy.

FREE Accessory Board + 90 Days Reformer Workout Bundle on Merrithew Connect with any Professional Reformer
Learn more

Save $250 off Professional Reformers + 90-Day Reformer Workout Bundle access on Merrithew Connect  Applied at checkout


acuBack™ 0.0 0 Be the first to add a review
SKU : ST06239
$55.99 CAD
$55.99 CAD

An effective tool for more than just a good back massage, the heatable acuBack uses bodyweight to release muscular and myofascial tension. Ideal for relieving chronic lower back pain, muscle knots and muscular discomfort, as well as encouraging blood flow to fascia and muscle tissues. The acuBack is also great for targeting trouble areas like shins and calves. Download the acuBall App to your Android or iPhone and discover easy-to-follow instructions for targeting and treating tight or injured areas.

  • Water-filled, latex-free and hypo-allergenic
  • Heat in microwave for deep penetrating warm massage
  • Can help induce deeper sleep
  • Uses bodyweight to release tension in muscles and myofascial tissues in just three minutes
  • Free downloadable acuBall app for iPhone and Android
Total body relaxation

Specifically designed to work on the muscle groups of the back, the Heatable acuBack is also ideal for easing shin splints, quads, hamstrings and calves, as well as releasing tension in the ribs, shoulder blades and scalp.

Uses bodyweight to release tension

Place the Heatable acuBack underneath the area of tension, then relax as your bodyweight does the work for you. Muscles will begin to significantly relax and release in just three minutes.

Perfect posture

Use the Heatable acuBack when seated to induce proper posture and spinal alignment, while the nibs and heat work on releasing tight muscles.

What would I use the acuBack for?

For proper sitting posture + muscle and joint release – it’s incredibly versatile. Place it behind your back on a chair or while driving to improve posture. If you use a foam roller the acuBack outperforms it in every way and is far easier to use. Instead of rolling – find the area in need of work and let your body melt over the tight spot for a full 3 minutes. No movement is needed.

How do I heat my acuBack?
  1. Microwave on microwave safe plate for 50-60 seconds. acuBall WILL NOT feel hot when first removed – allow a minute or so for the heat to reach the surface. Heat will last for 1 hour. Cool to room temperature before reheating. NEVER exceed 60 seconds in microwave as ball will burst, becoming flat and useless!
  2. Immerse in boiling water for 12 minutes. Towel dry.
Can I use the acuBack to loosen shins?

Absolutely – while kneeling place your shin in the groove running around the acuBack. Find the tight spots and let your body weight do the work for a full 3 minutes.

Can I use the acuBack to loosen tight calves?

Yes – it’s fantastic. While kneeling place the acuBack on the top of your calf and kneel down on it again for a full 3 minutes.

Can I use the acuBack behind my shoulder blade to loosen it?

Yes it works extremely well. Place it behind your shoulder while lying down and let the weight of your body do the work.

What are the little nibs on the top of the acuBack for?

These smaller nibs are for loosening forehead muscles. Place them on your forehead with your hand over the opposite label side of the acuBack letting the weight of your hand contribute to the downward pressure of the nibs. Close your eyes and breathe enjoying the feeling of your forehead muscles releasing.

Are there any reasons not to acuBack?

Yes. Bruises, fractures, cuts, infections, discolourations, advanced osteoporosis and brittle bones should never be acuBack. Individuals who bruise easily as a result of medication should not acuBack. If you have pain, get professional health care advice to fully understand why you feel the way you do before acuBacking.

Where do you hurt?

Free downloadable acuBall app for iPhone and Android. Click or tap on the location where you feel pain, then watch the video on how to use your acuProduct.

Where do you hurt?
  • Wipe clean using a diluted mixture of water and mild soap
  • See package details for more information
acuBack dimensions
Length3.25 in8.2 cm
Width8 in20.3 cm
Weight1.25 lbs0.57 kg

30 day returns
Within 30 days of receiving your order, this product may be returned for a full refund, exclusive of shipping, provided it is unused and in its original condition. For assistance, email

At Merrithew we craft and source our products with pride, delivering durable and safe to use goods that we stand behind. If you receive a defective product, Merrithew will replace at no cost with proof of purchase. Read our complete warranty terms and conditions

Merrithew serves the globe shipping within the US, Canada and many oversea destinations. For orders of large equipment or over $600 in value, a separate shipping quote will be sent to you within 24 hours of your order. We are happy to provide you various standard and express shipping methods options at checkout

Distributor territories
Merrithew sells on a direct basis to most countries around the world. To provide better local service, we have partnered with distributors in select countries. Contact your local distributor who will be happy to assist you with your order

Have questions? We’re here to help! Contact us at

Customer reviews

There are no reviews for this item.

Customers who purchased this product also bought…

DVD - The Secret to a Strong Back
DVD - The Secret to a Strong Back
Toning Ball™ - 1 lb
Toning Ball™ - 1 lb
Stability Ball™ with pump - 75 cm
Stability Ball™ with pump - 75 cm
acuBall® Large
acuBall® Large