Gaiam Ultimate Balance Ball Chair (Standard or Swivel Base Option) - Premium Exercise Stability Yoga Ball Ergonomic Chair for Home and Office Desk - 52cm Anti-Burst Ball, Air Pump, Exercise Guide

I have some back issues due to sitting at a computer all day every day and my doc suggested I get something that would engage my core more often. I found this and went for it. Surprisingly (to me) it actually sits quite comfortably especially with the little lower back support thingy on the back. The wheels roll fine on carpet at the office as well as on hardwood in my home office so I'm pretty pleased with it.I will say that when the ball is inflated to 'firm' it does sit quite high so if you have a lower desk setup that might be an issue but if you're willing to have a softer feel to the chair a lower desk should be ok too.

This is the version with the correct size ball. Literally the best. I have bought both versions. Stay away from the other version of this chair that has the squarish frame you can add the risers to. The ball is NOT the same as this one. That ball material is much thicker and inflating it is a nightmare and it doesn't have the same bounce or comfort. THIS version is fantastic. DON'T ORDER THE PURPLE BALL AND DONT ORDER THE SWIVEL VERSION.

I bought this because I'm spending a lot of time at my workbench height desk, and needed something that was more comfortable than my regular stools. I'm a heavier user, which factors in.-First problem solved: The back was wayyyyy too far forward. I couldn't center myself on the top of the ball, and the metal tubes run into the plastic webbing in the undercarriage. I used a pipe-cutter to shorten the tubes by about 4" or so, then I could sit on top of the ball.-Second problem solved: The cutout in the front of the frame allows the ball to squoosh forwards. Because it's on wheels, you can't really push it back, or it shoots out, and then you're on your butt. And the ability of the ball to deform out the front, just makes it a weird experience, because I felt like I was always fighting with the chair to get it to feel good. If you look at their earlier models, this is clearly a problem they had to deal with before, which they solved with a metal arch that holds the front of the ball in. Well, I didn't want to go to that length, so I used a nylon ratchet strap, hooked around the metal bars, basically 45 degrees up from below the back, up over the front, and back again. Now the ball is constrained, and I can sit up straight, which is what I wanted this damn thing for in the first place. The strap keeps the front contained, and I can sit happily while I work.And this is why this is such a complicated review. What I've come to is that it's possible for this to be a functional, comfortable chair. Very much so. I used to be a muscular guy, now I'm middle aged, and I need a chair that allows me to sit comfortably. And after being modified, this chair works quite well. And I'm pretty happy with it now.But I'm also aware that my skill set isn't typical, so I can't recommend this thing for what I consider to be an average person, because it basically requires some real modification to make it do what it was intended to do.It's a shame, really. I like the idea of a yoga ball for a chair. But most of the reviews I read about the chairs from this company in particular is that they can't design a decent chair.---Update: A month or two later.One of the screws fell out of the metal plate that bolts the wheeled base to the plastic frame that holds the ball, and the metal plate has bent. It's a chair that will see a lot of wiggling and wobbling, by design. They should have either included better lock washers, or added some loctite to the recipe.10 minutes later, I found another screw to replace the one that's gone missing, and re-worked the ratchet strap that's constraining the ball into a supportive position. All I can think is that their stated weight limit of 300 pounds is not really accurate. Not in the long-term, anyway. Especially given all of the other recent reviews of broken bases, etc.It takes a lot to get me off my butt to review something. But this thing has filled me with enough spite and petty snarkiness to make a suburban teenage white girl blush. So I hope whoever designed this godawful garbage gets some serious karmic payback.

I like this chair quite a bit, it forces me to sit upright and maintain my balance. I feel like it has helped prevent a lot of back stiffness after working all day and keeps me feeling awake and alert much more than a standard office chair.My only complaint, and I'm hoping the company will read this review and help me out, is that the spindle that attaches the base to the body of the chair, fractured after about 6 months and I cannot safely use the chair anymore. Before I buy a replacement, I'm hoping they'll reach out to send me a replacement part as, but if not, I'll probably buy a new unit!

This chair is more on the expensive side, but it is more comfortable than trying to sit on an exercise ball without the base. I use this as a desk chair while working from my home office. It is solid and sturdy. So far I love it and it has saved my back.

This is the second Gaiam yoga ball chair I have owned. The earlier model, though a completely different look and feel, broke for the same reason this did. The wheel base cracks near the wheel. My earlier one happened outside of warranty so I had to replace it. This one happened within the first six months.I contacted Gaiam. After a few exchanges, they agreed to send out a new chair -- free of charge -- since they don't have component parts you can buy or they can send. This means outside of warranty, I would have had to shell out another $100 for a new chair.Overall, I like the chair. Its lower profile wheel base makes it feel more stable. The yoga ball positions way too far forward, though. There's no real way to get it to sit in correctly. When you sit on it, the mass of the ball tends to move outward, toward your legs which makes it feel a bit forward heavy.When the wheel base cracked, I was nearly dumped out of my chair but caught myself at the last second. The plastic they use has no reinforcement such as steel plating or anything and is not dense enough apparently. I'm not heavy set and don't use the chair outside of the parameters of a regular office chair. Be careful with it if you get one.

Life changing for office workers. I had purchased a really good office chair, but my back was killing me after working on my computer all day. This has been life-changing.