







Product Description +-
Fit Guide +-
The BackStrong chair fits into the 95th percentile of human beings, meaning it fits the same rules as automobiles must follow. Only 5% of the population may be too tall, and 5% may be too small. The seat height is 21.75". The range is 18.75"~21.75".
Maximum weight capacity 275 pounds
Return Policy +-
All33.com purchases come with a 60-day money back guarantee unless otherwise noted at the time of purchase.
If you are not satisfied, you may return the item within 60 days of delivery for a full refund of the purchase price less return shipping costs (covered by the purchaser).
This policy does not apply to refurbished products
We recommend you keep and use your chair for at least 10 days to allow your body to properly adjust to your Backstrong C1 because of the unique functionality of the SIM (Sit-In-Motion Technology).
If you still wish to request a return after 10 days, please call All33 Customer Service at (855)-223-6010 or send an email to support@all33.com
The BackStrong chair will:

Support ideal posture and movement to increase flexibility

Stimulate circulation to reduce fatigue from long hours of sitting

Creates movement allowing for an increase of oxygenation and respiration

Reduce neck and shoulder pain strain while you sit
Doctor Recommended
Watch world renowned Dr. Travis Stork explain why he believes the All33 Backstrong chair is a must have for anyone who sits thoughout the day.
Product Features

It's Slouch Proof
Sit In Motion technology allows the saddle to react ergonomically, giving you lower thoracic support and ideal posture - reducing neck and shoulder pain. While softly cradling your lower back to relieve crucial pressure points and instantly improve your posture.

It's One Of A Kind
The Backstrong C1 is the only chair in the world that allows natural movement of the pelvis and back stimulating circulation, improving flexibility, and encouraging an increase of oxygenation and respiration.


It's Easy On the Eyes
Foldaway arms allow you to move much closer to your desk, and help you work with much less strain on your eyes. As an American owned company, we strive to only use the finest materials to make our chairs, designed to last for years on end, and keep a nice sleek look.

60-Day Money Back Guarantee
We know you'll absolutely love your chair, but if for some reason it isn't right for you, we will give you a full refund (Within 60-Days of Purchasing). Our chairs also come with a 5 year limited lifetime warranty on all components with a one year warranty on cushions. For more details about our warranty click here.

Outperforms the Competition
The only chair that does something for you. Our Sit in Motion™ technology alone would be enough to beat out the competition, yet The All 33 Backstrong Chair wanted to be the very best, so we did it all!
Comparison | All33 Backstrong C1 | Leading Office Chairs | Leading Ergonomic Chairs |
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![]() Sit in-Motion Technology |
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![]() Improves Back Health |
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![]() Stimulates Circulation |
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![]() Improves Posture |
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![]() Updated Technology |
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![]() Comfortable For Hours On End |
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![]() Sleek Design |
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![]() Heals Back Pain Passively |
Built With Care

Adjustable
Completely adjustable seat-height lever, as well as a 360-degree swivel with smooth rolling coasters

Simple
From product design to technology, we value simplicity. With 6 simple pieces, the chair can be assembled in less than 10 minutes.

Sustainable
All of the components of our products are built with sustainability in mind and are 100% recyclable.
- Reviews
- Questions

It was for my husband who has a back spine, posture, and reads a lot. He loves this chair !!

Best lumbar support of any chair I’ve ever used. For the price I was expecting better quality wheels and arms materials. Doesn't breath like a Herman Miller and I wish it was a bit softer on the bum (gets soar after some time) but that’s a good reason to get up shake out and move around more anyhow!

Took several calls to customer support to get the chair shipped. The tracking number was sent to the carrier but they never shipped the chair. When it did come it was easy to put together but after a week of using it found it very uncomfortable and gave it to my wife. Now I am back to using my old chair till I find something new...

Love it Very comfortable

So far the Chair does indeed improve our ability to “work” throughout the day! Was skeptical for the cost but there are values to be reaped and look forward to a long and healthy relationship