How often do you find you have to add air? I am using the 75cm ball as a desk chair and need to add air every day to keep it firm and high enough.
1248411
I use it for exercising and I must admit not enough. I haven't had to add air since I bought this(many months)
1248412
I own both a 65cm and 55cm. They need to be refilled once every other month or so. If you are refilling every day then I suspect you have a leak somewhere, either around the valve, or elsewhere.
202758
I have mine on the 2nd hole from the bottom and from the floor to the top of the backrest, it's about 30". There are a total of 4 holes for you to adjust the height as you need. As for the ball, mine fits fine. I think the very nature of the ball causes it to expand after you've sat on it for a while. I agree, it feels like it's deflating, but I think more often than not, it just feels like that because the ball is being stretched out. I have mine in my office at work and I sit on it for 8 hours a day so it gets a lot of stretching. I just keep the pump that came with it in my desk and I'll re-inflate it as needed. No big deal. I have mine on the 2nd hole from the bottom and from the floor to the top of the backrest, it's about 30". There are a total of 4 holes for you to adjust the height as you need. As for the ball, mine fits fine. I think the very nature of the ball causes it to expand after you've sat on it for a while. I agree, it feels like it's deflating, but I think more often than not, it just feels like that because the ball is being stretched out. I have mine in my office at work and I sit on it for 8 hours a day so it gets a lot of stretching. I just keep the pump that came with it in my desk and... » Read More I have mine on the 2nd hole from the bottom and from the floor to the top of the backrest, it's about 30". There are a total of 4 holes for you to adjust the height as you need. As for the ball, mine fits fine. I think the very nature of the ball causes it to expand after you've sat on it for a while. I agree, it feels like it's deflating, but I think more often than not, it just feels like that because the ball is being stretched out. I have mine in my office at work and I sit on it for 8 hours a day so it gets a lot of stretching. I just keep the pump that came with it in my desk and I'll re-inflate it as needed. No big deal. « Show Less
2271227
I weigh 124 lbs and had the same problem. Ball does not hold air. Chair has been sitting in my office to the side since I bought it & I intend to return when I get the chance. It is DANGEROUS!! Have gone back to my "regular" chair of just a larger exercise ball -- no wheels, but much safer!
2220645
I use an old hand pump you can buy anywhere to inflate like an air mattress. That or an air compressor. I have used it 5 weekends now, still going strong. Love it.
331768
I had to fill it up everyday with air. I bought it to use it on my Vegas trip of 4 nights. I had to add air every night before sleeping on it.
1359678
I havent measured the size, but it's a regular size ball. I can't recall if it came with air, but think it didn't. I frequently use the pump to fill air in balls, so don't think it's an issue. My son still plays with this ball every day and loves it
584628
I just push the air out by hand. If you lean on it, you can use your body weight very effectively. I just went and looked at the instructions, and that's what they recommend, as well.
1451347
I used it as is. My sister added air because she wanted hers firmer. It was okay for me as is.
1531101
dear friend, I do use the ball once in a while, still is working but I have no idea how long it will last. This bold is still the coolest thing since sliced bread.
1202588
The pump seemed to worked fine for me. I've only added air once or twice- but I use the cushion differently than most. I use it in my car for lumbar support- I place it between my back and the seat back- it makes a huge difference in how I feel.
1247790
Depend on how you're going to use it. Kids? Adults? Daily? Every once in a while? 10 minute sessions? 30 minute sessions? The more use, the more you need a sturdier model. I bought this one to replace the one that we had bought 15 yrs ago that had begun to wear where the fabric attached to the clips that hold it to the frame. Ours ReboundAir Standard that we have now is used by 2 adults who weigh 160-175 lbs each. Used by at least one of us daily. Still looks & as good as it did when we took it out of the box 2 yrs ago; feels like it has the same amount of bounce, too. From what I can tell at this point, it looks as if it will perform as well as the previous one did. Depend on how you're going to use it. Kids? Adults? Daily? Every once in a while? 10 minute sessions? 30 minute sessions? The more use, the more you need a sturdier model. I bought this one to replace the one that we had bought 15 yrs ago that had begun to wear where the fabric attached to the clips that hold it to the frame. Ours ReboundAir Standard that we have now is used by 2 adults who weigh 160-175 lbs each. Used by at least one of us daily. Still looks & as good as it did when we took it out of the box 2 yrs ago; feels like it has the same amount of bounce, too. From what I can tell... » Read More Depend on how you're going to use it. Kids? Adults? Daily? Every once in a while? 10 minute sessions? 30 minute sessions? The more use, the more you need a sturdier model. I bought this one to replace the one that we had bought 15 yrs ago that had begun to wear where the fabric attached to the clips that hold it to the frame. Ours ReboundAir Standard that we have now is used by 2 adults who weigh 160-175 lbs each. Used by at least one of us daily. Still looks & as good as it did when we took it out of the box 2 yrs ago; feels like it has the same amount of bounce, too. From what I can tell at this point, it looks as if it will perform as well as the previous one did. « Show Less
1017799
I use this ball for working at my computer. It functions well for me in this capacity. I have back/neck problems from herniated discs and this is far more comfortable for me than a conventional chair. I do not have a desk job so I'm not sitting on the ball for 8 hours a day. Just make sure you can inflate the ball to a comfortable height for your desk. The exercise height may be different than your desk height. I have the 65 cm ball and am considering ordering a 55 so that it might be slightly firmer when I inflate it to the correct height for my desk. I would like to inflate the 65 a bit more to be firmer, but then I would be sitting too tall for my desk. Overall, it is still my favorite desk chair. I use this ball for working at my computer. It functions well for me in this capacity. I have back/neck problems from herniated discs and this is far more comfortable for me than a conventional chair. I do not have a desk job so I'm not sitting on the ball for 8 hours a day. Just make sure you can inflate the ball to a comfortable height for your desk. The exercise height may be different than your desk height. I have the 65 cm ball and am considering ordering a 55 so that it might be slightly firmer when I inflate it to the correct height for my desk. I would like to inflate the 65 a bit... » Read More I use this ball for working at my computer. It functions well for me in this capacity. I have back/neck problems from herniated discs and this is far more comfortable for me than a conventional chair. I do not have a desk job so I'm not sitting on the ball for 8 hours a day. Just make sure you can inflate the ball to a comfortable height for your desk. The exercise height may be different than your desk height. I have the 65 cm ball and am considering ordering a 55 so that it might be slightly firmer when I inflate it to the correct height for my desk. I would like to inflate the 65 a bit more to be firmer, but then I would be sitting too tall for my desk. Overall, it is still my favorite desk chair. « Show Less
608697
Not really. I you're purpose is to use the ball at a desk, it will likely be too low and you will have to purchase a special structure that is specifically available for use with stability balls. Otherwise a 75cm is a big ball. How tall are you? Are you sure you've filled it completely?
855261
The separation issues are due to over inflation. I had mine for 3+ years using it daily i'd only have to ad air once every few weeks. I bought one for a friend around the same time I got mine and his only lasted a year but he had a tendency to aim for the firmest he could get resulting in the sections violently separating one by one till it was a round mass on the top n bottom. if you use it right it's not an issue. if you need it that firm you prob shouldn't be getting an air mattress. I've bought several more over the years for friends and family and am about to buy another one the people having this issue over inflate simple as that.
2271225
Your ball is underinflated. If I remember correctly you should inflate until ball is 22 inches in diameter.At that size your problem will be solved.Reread instructions.
1335931
I am 5'6" and using it. It is the same height as my chair seat. Some variance may come from how much air you put in the ball, but the higher you go the harder the seat. I spend some time in a regular chair, and some of my time in this chair on any normal day.
27264
I'm 5'1" and when we initially pumped the ball, I was able to put my feet flat on the floor. However, after a few days the instructions say to add air to the ball for maximum effectiveness. After doing so, my toes barely touch the floor.