BackStrong C1 — Vegan Leather

413 reviews
Pay Once
$1,199 $799

or Pay over time

BackStrong C1 — Vegan Leather

413 reviews
Pay Once
$1,199 $799

or Pay over time

Choose Color: Black Upholstery with Black Frame

60 Day

10 Minute
assembly time

Proudly based
in the USA


Your body wasn't designed to sit all day!

This chair is the result of years of research, prototyping, and testing to solve that problem.

Our unique Sit In Motion® technology acts like a swing to relieve crucial pressure points while providing lumbar support. Created by a chiropractor and industrial product designer, this is the first and only chair that can induce perfect posture and give you the freedom to move.


  • Soft high-grade vegan leather upholstery
  • Foldaway arms allow you to move closer to your work for reduced eye strain
  • Pneumatic seat-height adjustment
  • 360-degree swivel
  • Smooth-rolling casters
  • Assembly instructions included. (It's easy — takes less than 10 minutes)

While the optimal height range for this chair is 4′ 11 ½″ (151 cm) to 6′ 1″ (186 cm), some of our customers who fall outside of this range have still found it to be a comfortable fit.

The seat height is 21.75″. The adjustable range is 18.75″–21.75″.

Maximum weight capacity 275 pounds.

  • Chair Size

    22 ¼–30″W × 26 ¼″D × 41″–44″H
  • Seat Height

    18 ¾″–21 ¾″
  • Seating Area Depth

    17 ½″
  • From Arm to Floor

    24 ¾″–27 ¾″
  • Seat/Back Cushion Size

    30 ¼″W × 26 ½″D × 18″H
  • Carton Size

    30 ¾″L × 21 ½″W × 26″H
  • Container Loading

    84 / 180 / 239 / 271
  • Weight

    N.W. 48.86 lbs, G.W. 60.28 lbs
  • Foam

    Molded foam
  • Arms

    Solid PU arm pads
  • Gas Lift

    CP-1680-45 (80/185 mm drop down 45 mm) purchases come with a 60-day Money Back Guarantee unless otherwise stated at the time of purchase.

If you are not satisfied, you may return the item within 60 days of delivery for a refund of the purchase price. You will be responsible for return shipping costs, which vary by carrier.

It can take some time for your muscles to adjust to proper posture. We recommend you keep and use your chair for at least 10 days to allow your body to properly adjust because of the unique functionality of our Sit in Motion® technology. Please keep the box until you are confident you are satisfied.

If you still wish to request a return after 10 days, please call all33 Customer Support at (855) 223-6010.


Fit Guide


Return Policy

Sit in The BackStrong and Gain:

Ideal posture and
greater flexibility

Better blood flow
to reduce fatigue

More oxygen
to your muscles

Relief from neck
and shoulder strain

Backed By Experts

Product Features


Unlike regular chairs that allow you to lean back at unsafe angles, ours was designed to fit the curve of your spine perfectly. This design cradles your pelvis and lower back, causing your vertebrae to stack into ideal posture. Sit back, and you’ll find it’s impossible to slouch. The result? Relief in your neck and shoulders and a difference you can feel.

Made to Move

Our Sit In Motion® technology makes this the only chair in the world that allows natural movement of the pelvis and back. It was built to move and rock with you, stimulating circulation, improving flexibility, and bringing more oxygen to your muscles.

Easy on the Eyes

Foldaway arms allow you to move much closer to your desk and reduce eye strain. Plus, our commitment to making things that last means we source materials carefully to create chairs that look sleek and at home in your space.

60 Day Guarantee

We know you'll absolutely love your chair, but if for some reason it isn't right for you, we’ll refund you the cost of the chair within 60 days of purchasing. Our chairs also come with a Limited Lifetime Warranty on all components with a one year warranty on cushions. For more details about our warranty click here.

Built with Care


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


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


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

Customer Reviews
4.7 Based on 413 Reviews
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Filter Reviews:
Jim C.
United States United States
Instant Satisfaction!

I instantly found myself spending all my time in the all33, replacing both my soft leather lounge chair and my massage chair. I found that Incredible! After the first day my lower back felt much looser and I was not sore after standing for the first time. Why would I spend all my time in this one smaller chair? The results explained it all! I’m very impressed with the quality!

Travis W.
United States United States
Changed my life

I was very skeptical about spending this kind of money on a chair but I do work 9 hours a day in one and figured most of my back pain probably stems from that. I've had the chair for a few weeks now and this is honestly the most comfortable chair I've sat in. The support is excellent and I notice that I'm sleeping better at night as well. Overall, I would purchase this again without any apprehension now knowing what I know.

A all33 Customer
Michelle B.
United States United States
Can now sit without pain and stiffness

I’ve had this chair for almost a year. Before this chair, I could only sit at my desk for about 20 mins and when I got up to walk around my hips and low back were stiff and painful. If you look at the reviews, they seem to be too good to be true. But after having this chair for a year, I know that these are real. The moving seat and it’s design means relief for your tail bone, low back and hips. When the chair comes, they give you a seated exercise that strengthens your core by purposely making the saddle portion move. I usually do that exercise a few times each day and it’s super easy. I’d say it took me about 10 days to two weeks to get used to the chair, particularly as my muscles and posture started to adjust. But now I can sit and I don’t have any pain while sitting and only mild stiffness (no pain) after getting up. Looking back to how difficult sitting was before this chair and now, I am now ready to #sharemychair. I couldn’t be happier. Also, there was a problem with the saddle section when it arrived. It had too much padding at the top portion and rubbed against the chair, restricting motion. Customer Service sent me a new saddle section (no charge and didn’t need to return the defective saddle) and then the chair worked as expected.

Herb G.
United States United States
I was Dubious ... Now I'm a Believer

I admittedly was very dubious about the Backstrong when I first heard about it from my chiropractor, who (disclosure) is also a friend of the chair’s inventor. I mean, a rocking bucket for the seat …. REALLY? We would discuss it the few times I went in to deal with some ache or pain, most if not all caused by the amount of time I spend sitting. I have spondylolisthesis and, as a writer who also runs a small research business, I sit much of the day and focus. That is NOT a good combo, which is why ergonomics and back support are VERY important to me. Over the years, I have spent thousands on chairs. For at least 10 years my chair was the Humanscale Freedom Chair. But I always complained it was too hard, especially at my tailbone and lower spine. Then, after doing an enormous amount of research and test-sitting, I switched to the Herman Miller Embody. The Embody’s concept (in theory, at least) seemed to make sense since it uses tiny spring-like pixels that supposedly release pressure as your body moves. That was my chair for at least the last six years. But I still had uncomfortable pressure in my tailbone and lower spine. And I would be stiff when I got up after hours of sitting. I’m 68, so I simply figured that was to be expected. But still… I hated the stiffness of my spine, especially since I regularly exercise and do stretching exercises. With both the Freedom Chair and the Embody, I also always grumbled that neither would tilt forward or do something so I wouldn’t slouch as I would focus on writing. Then, about a year after my chiropractor first told me about it – after feeling the sitting was really starting to take a toll – I took the plunge. The Backstrong was on sale for Black Friday and was priced at about half the price of Embody with a money-back guarantee and a long trial period. I had ZERO to lose. Verdict: Let’s just say the Embody is now in the garage and will likely be sold or donated. The silly bucket on the Backstrong isn’t so silly, after all. For the first time in years, I can feel my vertebrate move (while I'm sitting, no less), at times like I’m having a minor adjustment. The REAL secret, I think, is that there is no chair – just air – where your tailbone is. That results in zero pressure. Some people have complained that it’s too hard. Well, it isn’t soft. But the benefit of that is that you are forced to stand every now and then. Let’s face it, there is no perfect chair; they ALL have tradeoffs. The Backstrong is closer to their claim of slouch proof WHILE YOU ARE WRITING than any chair I have seen or tried. This is a serious task chair with the added benefit of being able to rock your pelvis as you sit, so your lower spine doesn’t get stuck. (Think of the rocking pelvis exercises you might do while on your back.) The best news, I’m no longer stiff when I stand after hours of sitting. Certain pains have disappeared or have been minimized. My only complaint about the chair is the quality. The first chair they sent had a pretty bad squeak. That was immediately handled by the fantastic Sandra in customer relations. I have no idea who she is, but she deserves a raise. I also think the casters that come with the chair are too slick for hard flooring. I know that mine was. Solution: I replaced them with the wood-floor casters that I had ordered with my Embody. All in all, in my case this chair appears to REALLY be what the doctor ordered!

Kim P.
United States United States
Working Title...

I bought this chair because of Bruce Willis' recommendation and I have arthritis in my lower back. First off, I'm a woman and set this up by myself in ten minutes. Secondly, I only bought this because it had a money back guarantee that I was sure I would use even if I had to drive it the 60 miles to Beverly Hills. I can try 20 office chairs and not find comfort in a single one. I am that picky with chairs. It's not that I'm hard to please, but my lower back definitely is. Arthritis sucks and you do what you can. I do not believe in medication. I'd rather deal with the problem and see what works. I've used an $1.100 Knoll Life chair for the last 10 years - one at the office and one in my home office. It is a great chair but I had to try the Backstrong because I have lousy posture and a bad lower back and I will try anything that comes highly recommended as this chair did. (I WAS very skeptical when I ordered it.) Once putting the chair together yesterday, I put my Knoll Life chair out of the way and used the Backstrong chair for about 3 or 4 hours and finished up for the day. This morning, I used it a few hours and decided to sit in my Knoll Life chair just to see how it made my back feel because my lower back was in pain. I sat down and my back immediately slouched. The lack of support hit me like a train. I immediately went to my son's room and gave him my Knoll life chair. One thing I notice is the chair lifts your rib cage up and keeps it upright. Keeping yourself upright requires muscles we slouchers don't use enough, so I think the first few weeks will be tough on the back muscles especially. I've noticed that in just these past two days. The exercises that come with the chair are awesome and I do them a few times a day. Many of them I've done before because when you have a bad back you stretch in ways that alleviates the pain, which is what the exercises do. Overall, this is an AWESOME chair and I highly recommend it. It's also relatively inexpensive considering you're getting a chair that truly supports correct posture unlike any other I've tried. Most chairs that claim this - like my Knoll chair - are more comfortable than the average expensive chair, but can't compete with this Backstrong chair. This is in a class by itself. I have a great chiropractor in Orange County, California who I've known for 30 years. He will get a full report from me on this chair next week. It is really that good.