Very happy with this chair. Solid ,heavy build which folds down for transporting. Quite a bit of variation possible in height and foot rest position made it easy to find a good playing position (I'm 6ft with a light build but would expect the chair to be good for people much larger than myself). Have used the chair both live and in the studio. Live, it is quite a weight to transport as well as space consuming (even when folded) however, it has provided a sturdy platform to work from (and one which other performers have been keen to borrow!) The seat and footrest are on bolts which have quickly become a little slack. This is not actually a problem in terms of the seat structure but merely that when trying to transport the chaor, the seat in it's folded position keeps collapsing into the playing position....which is quite painful if your fingers happen to be carrying the chair in that region a the time. However, they can be tightened back up - just keep an eye on them.
I use the chair for playing acoustic guitar and am able to achieve a comfortable playing position. Mind you, using the chaor for sustained periods, say longer than an hour can become uncomfortable.
Overall, very happy with the chair. Sturdy, well thought out and good construction. Would recommend to others.