The armrests are not really out in the solid metal brackets, which means that the backrest wiggle. The adjustment mechanism for height only works the first 5-10 times well, then you only hear when turning the adjusting a cracking and Skip from inside the backrest. Really problematic is that the plastic guide at the place where the metal angle is inserted in the back, after a short time begins to tear, resulting in that the arm rest is useless. Conclusion: If every year will set a new record backrest, can safely access here. Everyone else should look for a higher quality solution.