Guys! This is not supposed to come fully inflated, nor have a pump. So don’t knock off stars for that. The partial inflation I’ve found perfect to make it a “wobble” chair. Keeps my core strong and posture better. Easy to move it around (no Adhesive is needed or came with it). Light weight but durable. Works well.

Great product and does help stabilize your core and posture. Only downside is there was some weird blue liquid dried on the wobble cushion - I wiped it off and sanitized but no idea where it came from other than possibly the item was previously used? Everything else seemed new about it. It was partially deflated so added a little air and it is perfect. Otherwise a great buy and very tough durable material so it should last a long time.

I swear I've tried just about every kind of donut and cushion for my tail bone pain. I even tried sitting in pillows! This is the absolute BEST cushion I've ever sat on. It helps my pain SO much! I bought their ball chair several years ago and that's great too but I am short and it's too low to make it comfortable for my work station so after years of suffering, I'm so happy to have found that they make this cushion from the same material. HIGHLY RECOMMENDED! :)

Gaima has AWFUL practices. Let's start with the fact that I received a clearly used product that you are supposed to sit on. Bottom is worn, the inflation opening is scratched around the surface and the product arrived pretty heavily deflated. It seems pretty clear that somebody got the product, used it, didn't like it and returned it and Gaima then sent it to me. Extremely poor form.So, my product looks nothing like the picture because it arrive so deflated I could touch the top to the bottom. I pulled out my foot pump, attached the needle (which only by sheer persistence worked because I had to keep putting it back in the hose) and performed CPR on the pump for about 20 minutes. There must be another dimension houses within the ball because air was going out of the pump, it wasn't leaking out of the ball or the hose and the ball didn't inflate one bit. I chalked it up to being defective and tosses it back in the box with the idea in mind of returning it.Well, I bought the ball as part of a total-body physical therapy measure to both help me regain strength after my last surgery and to help me recover from my next surgery. I was farting around with some resistance bands I had and trying different exercises from different angles and I was having a rough time getting full range of motion on some quad and hip exercises because my legs were just a bit too long. I broke out the ball, plopped in on the chair and sat down. I'm not very heavy and I'm not very tall- 5'9" and 170 pounds. When I sat on the ball the air pressure caused by my weight caused it to raise in height several inches and straightened my back, extended my stomach and raised my knees so my thighs were parallel to the ground and my feet were flat. I instantly felt sore in my lower back and lower abdomen. It was working EXACTLY as it was supposed to.Curious, I then took it to my office chair, where I couldn't touch my heels to the ground unless I sat on the very front of the seat (which then causes me to slouch as my back rounds out to accommodate the downward slope of the seat) and puts pressure on my lower thighs (which hurts my knees because it causes my heels to hang). I plopped the ball down in my chair and sat on it. Again- spine goes straight, knees come up, thighs parallel to the ground, feet flat on the floor. Soreness in my lower back and lower core.Gaima's business practices aside, this thing works PERFECTLY. Give it an honest shot. I can't speak to how well it will work for much taller or shorter or much heavier people, but the ball I got is exactly the dimension I needed. Don't toss it before trying it, even if it looks lousy when you get it.Three stars because it works. Minus one for the condition it came in and the non-function of the inflation aspect and minus one for the fact Gaima clearly sent me a ball someone returned.

I have had this cushion over a year and it has really helped with my lower back pain sitting at my work desk. I have tried a ton of them including memory foam chair cushions. Love it!!

I wasn't sure what to expect from this cushion, but I began noticing how much I was slouching in my office chair and how badly my back hurt much of the time and decided to give this a try. I am pleasantly surprised by how comfortable this makes my chair and how straight I sit up now with little effort. It's too soon, but I do think my core is getting stronger. And my back is much less painful. For those who are wondering (as I was), the cushion comes inflated and the amount of air seems about right. It's a bargain for the price.

not comfortable for sitting

Quien lo usa, el casa, refiere que es muy cómodo y facilita estar muchas horas sentado.

Didn't really work for me. Did not like that I have to inflate it but not sure what gadget to use to inflate it, so currently works as a leg rest for me as was not comfortable on my chair.

All this sitting working from home in a hard chair has not been good. This wobble cushion is like sitting on a balance ball without the bulk of a ball. It works perfect with my chair. I still have back support if I want by pushing it as far back as possible and I can still cross my legs if I want. Best of all, my hips and sit bone doesn't bother me like they were sitting even half a day in my chair. I've only been using it for a few days but overall feeling an improvement in hip and sit bone health since using it.I enjoy sitting on the floor playing games around the coffee table but it can cause the same discomfort as my desk chair. This cushion takes the discomfort out of sitting on the floor for prolonged periods too.

I bought this for my office chair as I spend far too much time sitting most days. I love it, and so do my colleagues, I often return to my desk to find someone has ‘borrowed ‘ it. One of them ordered their own after using mine while I was on leave for a couple of days. It came inflated so was ready to use and is a great colour (I got wasabi). I don’t have any back problems but used to find my lower back was stiff at the end of the day but not anymore.