We purchased two of these chairs for our 6 and 8 year old sons so they could sit high enough for their adult sized desks. The only issue we found was difficulty adjusting the seat height up and down.  The kids are too light to do this independently.  Even I (at 100 lbs.) needed the extra weight of one of my sons (45lbs.) to adjust it.  Other than that, it is a great chair and the kids enjoy it and think it's comfortable.