A kneeling chair does get your spine into a neutral position if the seat is at the right angle for you. Some things to consider are seat angle and whether it's adjustable, distance from seat to kneeling pad, how the seat height is adjusted, and the quality of frame, cushions, and wheels. I read a lot of reviews and was considering the one made by Dragonn, the one made by Boss (the only model that I found that has a pneumatic gas lift height adjustment), and the Sleekform Alpharetta model (the only model I've seen that has a seat angle adjustability feature). However, the Sleekform Alpharetta is sold out everywhere, so I purchased the Dragonn chair as well as this one made by Boss to compare and see how they felt. Unfortunately, in most of these chairs, the height adjustment is directly tied to seat angle, so the higher you set the seat, the deeper the angle of the seat. Also, if you're not an average height person, there's no way to adjust the distance of the kneeling pad from the seat, so for me being 5 feet tall, with very short thigh bones, I have to sit pretty far down on the seat to rest my shins on the knee pad, and there's no way to change that. I took a photo of the Boss (black) & Dragonn (gray) side by side in the lowest position and highest position, and you can see the Dragonn adjusts much higher, but also gets at a very steep angle. I do not have to use the chair at a desk all day, this is just for a couple hours of work at a time, so I do not need a chair that I could sit in for 8 hours. In that case, I would recommend having a couple of different options, so you can change positions/seats and from sitting to standing throughout the day. The Dragonn was very easy to assemble especially if you watch the video. For the price, the quality is nice enough. The cushions are well made, but the casters are plastic, not metal. However, I imagine you could get metal casters at the hardware store and replace them to have something more heavy-duty. The cushion is very thick and sturdy, but a bit hard. Also, it turned out that no matter how low I put the Dragonn seat, the angle was too steep for me and did not allow me to have my spine in neutral. Instead, it made me overarch in my low back, which was immediately uncomfortable. In order to adjust the seat height, you have to get out of the chair and turn a screw that slowly adjusts the height, so it's not a chair you can adjust quickly. The Boss was also very easy to put together, but there was no video. For the price (only around $80), I feel the quality is very good - the frame and wheels are the same quality as the Dragonn, but the seat cushions are much thinner. Although the seat cushions are not as heavy duty, I actually found them more comfortable because they are softer. The Boss has a pretty shallow angle at the lowest setting, but keep in mind that having your thighs pointing down is enough to tilt your pelvis forward, so this was plenty of an angle to get me sitting up tall with a neutral spine. Also, when the Boss is at the highest setting, it's still not too steep for me, so pretty comfortable at all settings. To adjust the chair higher, you just take your bottom off the seat, pull the lever and let it rise to where you want. To lower it, you can pull the lever while still sitting in the seat, and lower it to where you want. Very easy and quick to adjust. This was the only model I found with this convenient feature. My conclusion is that that I think it's worth trying a couple of these to see what works for you, because I think the angle at which you feel comfortable might be a little different for everybody. If you're able to get a model like the Sleekform Alpharetta, which has a separate adjustment for seat angle, that probably will allow for the best fit, and I may try that if it ever becomes available int he future. Fortunately, the Boss was such a reasonable price, I felt it was worth keeping until I can try the Sleekform.
