After owning this chair for just over a year it is hard to sit in comfortably anymore. The back does not lock upright in the locked position I sit at 120 degrees instead of 90. I am 6'5 220 lbs
This chair doesn't sit straight with the tilt lock in place and the tilt tension tightened there's so much play in the tilt lock you lean back too far. Chair is 6 months old and the lift cylinder creeps down during the day.