I've owned the BackSaver™ Kneeling Posture Office Chair for about a year now. It's seems like such a good idea, combining the benefits of a kneeling chair with a more traditional upright chair and at a sale price of $199 USD, it seems like a fair price.

However, after getting to know this chair, I can safely say that unless you are very slender and somewhat short, you will not like this chair. Even then, you may find it less useful than other kneeling chair solutions. I myself am about 5'8" and 155 lbs, so I'm definitely not your typical gigantic mound of American flesh (don't get me started about the U.S. obesity epidemic), but it feels too small for me.

My main complaint with the chair is its lack of an adjustable knee rest. The back of the chair moves forward/back and up/down so you can adjust the depth to allow for more or less support and get the seat back into a good position pretty easily. However the knee pad position is totally fixed and cannot be adjusted at all. The pad itself is too narrow for me and basically forces the user to keep his/her knees close together, which produces more strain on the lower back than a more open leg position would allow. Also, if you have the seat in its lowest position, the legs get in the way of your feet unless you orient the chair with one leg directly between your feet. 

On the plus side, this chair seems fairly well made, with a durable synthetic apholstery that comes only in black. Back on the minus side, the fabric is too slippery so, you can't really sit on the chair without using the knee pad like you can with some other kneeling chairs.   

I'd really like to see this chair done right, by adding a highly adjustable knee pad and a set of adjustable "task chair" style armrests and possibly losing the casters for some kind of leg arrangement that doesn't constantly get in the way of your feet (though that would be a non-issue for me if the rest of the chair worked better.

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On a final note, I'd like to mention that the folks at The Comfort Store, where I purchased this chair,  were friendly and helpful. They have an 800 number you can call to quickly talk to a real live human being and they generally seem knowledgeable about their products. They are based in Ohio and offer free shipping on many, if not all items.  Sadly, their web site design is a sprawling mess that is sometimes difficult to navigate due to the large amount of text, but the weak design is a minor inconvenience for such a complete selection of products. They can be reached at 1-888-867-2225, or visit them on the web at www.sitincomfort.com. They are not affiliated in any way with this web site, but if you contact them, please tell them you heard about them through ErgonomicReviews.com because I'm hoping they will send me something else to review if they discover that I'm sending customers to them.