Safco 4750GS Zenergy Ball Chair - Low Profile Active Seating for Office & Home - Ergonomic Yoga Exercise Ball Chair in Grass Green - Perfect for Workstations, Classrooms & Home Offices

I really want this ball chair to work. It's just the right size and looks nice at my desk. But the ball is stiff, tight, and uncomfortable. After sitting on it 4-5 hours a day for just one week, all I can say is: "This Hurts!" Hopefully, the surface will soften over time.I am a secretary and sit most of the day- this has made it possible to increase core work throughout day, as well as, strengthening legs with the bouncing part. The legs really make this "chair" so stable-the office floor is a vinyl floor and when sitting and standing you dont worry about it rolling out from under you. I cant say enough good things about it- would recommend AND would order again!I purchased this ball stool for my home office as an alternative to a traditional office chair, and it's a big improvement over my regular chair, if only because the bounciness of it reminds me to move more often. I do think it may engage core muscles more than a typical chair does, since the ball's shape and give does force you to stabilize yourself a little, but I wouldn't expect any miracles from sitting on it. I'm relatively athletic, though, and it may do more for someone with weaker core muscles to start with. I find myself getting uncomfortable less often using this chair compared to a typical chair, but I still have to stand up throughout the day to relieve the discomfort of sitting for long periods. It's one of the more comfortable chairs I've used, though, and I'm not sure it's possible to be fully comfortable sitting all day, even if you have a good chair.The chair's very easy to assemble, and the hand pump that comes with the chair isn't all that bad to use - it took me only a few minutes to inflate the ball fully. I didn't have problems with small surface area/sweet spot like some others had, though I'm admittedly on the small side (5' 3"), and it may be different for larger people. The chair seems to be a good height for a standard computer desk with a keyboard tray and allows your arms to be in an ergonomic position while typing and mousing. The lack of wheels seems like a smart choice, in case you lose your balance while sitting. The gliders on the feet move well over hardwood without being too slippery and haven't scratched my floor. It's true the mesh cover isn't as taut and seamless on my chair as it is in the product photo, but it still looks sleek and modern.I wasn't sure how I was going to feel about sitting on a ball all day, but after 5ish months of sitting at a desk on a folding chair, I really, really needed a change. But I didn't want a plastic mat and it's so hard to tell about desk chairs without sitting in them. But my kid loves his ball chair and I thought it was worth a try because it's probably more healthy anyway. Turns out I like it quite a bit. It's not as bouncy as a regular yoga ball, and it doesn't roll around, but it does have a little bounce if you're feeling restless (hello, 90-minute meetings, I'm talking about you). And yes, it feels much healthier. My back feels much better at the end of the day than it did sitting in a regular chair. My only complaint is that you're supposed to be able to make it shorter by taking the extensions off the legs, but one of them is on so tight I've been unable to get it off. I'd have liked to try it shorter, because it feels just a bit too high to me. I wish there was an easy option to replace the legs with more sizes of legs.I had been using exericise balls to sit on and I liked the way they would roll around. This does not of course. The reason I went to this chair is because my dogs would jump on the ball while I was sitting on it and eventually they poked a hole. The Zenergy chair has a mesh material to protect from that. The material is a bit on the coarse side so I have draped it with a towel like I used to do to the energy ball. The instructions give no clue on how much air to use to fill it up. I went too full at first and sitting on the chair became painful. I have been slowly draining the air trying to find the sweet spot. Have had it for a few weeks and still working towards that. The ball takes up only a little bit of space which is nice. The exercise balls had a much bigger footprint and will roll around. The chair is very solid and well made. I find that I don't just sit in one spot like a chair but I do move around which is excellent for someone who sits all day for a living. All in all I am getting happier with it and I bought it from a friend who really likes it. I don't think you will hate it and it is certainly much better than most if not all regular chairs.This was extremely easy to assemble. It’s lower than I really, but positions my daughters legs at perfect 90 degrees (she’s 5’ 1”). I knocked a star off because for some bizarre reason you cannot remove the mesh cover to wash. Several spilled drinks and an accident later, it’s basically trash. I plan on reaching out to support. I can’t even find covers that can take the brunt of the spills.The trick is to keep it inflated to an appropriate level (which usually requires a boost pump every 2-3 weeks - pump is included). When it's fully inflated, you get more benefits and are more likely to sit up straight. When it gets flatter, you're more likely to slump against your desk.At first, this chair required a mild effort from my hips and torso - now it doesn't feel like I"m making an effort at all. I sit in it all day, and I forget that a chair back is normal.I love this seat! However, just a heads up to those ordering this for an office of people with a good sense of humor: don’t get the pink one. Your coworkers WILL say it looks like a part of the male anatomy, and the whole process of inflating the ball inside will NOT help them stop laughing. Pretty much ever, to be honest.However, jokes aside, this is exactly what I wanted and has helped a lot with work-related aches and pains. One pro tip, though—if you sit longer than an hour at a time with no breaks, parts of you will go numb. I’ll let you guess which parts. And if you’re used to having a rolling office chair, you may end up falling off this thing a few times in the beginning. But overall, great seat!Very cool looking. This seats keeps you doing a little bit of exercise for your midsection, which is great for long hours seating. I wish it was a little bit taller, or had the option to increase the height. Overall I like it.If you want a chair that's cute but also a ball, this is the chair for you. I like that I can tuck it under my desk when I'm not using it. I got the red one and it's adorable. I use it for a few hours in the middle of my work day alternating with my old office chair and it helped my lower back a lot.J’adore! Très bien assis et aide à garder le dos droitI would like if there was room to store the inflator in the bottom.Pictures say a thousand words.