He is responsible for our little ones (6 years) really too big, also is required to lower it a little more weight than that of a "" normal weight "" child under 9 years. (For a 20kg dumbbell the chair goes smoothly upwards).
The roles, however, are a bit too loose, so every little movement resulted in the chair in a rolling motion. However can be limited by, for example thicker rubber bands stretched on each roll => more resistance.
However, the biggest drawback is the poor processing, both the edges of the metal elements (hydraulic) and the bottom of the swivel foot are very poorly finished and sharp! - For this reason, the product also gets only one star from me because it is advertised as a high chair ... with sharp knew ?!
Kids play with everything, because the chair is sometimes laid, so the bottom is free, and touched. If this is the dealer or the manufacturer itself read times, big tip: children's hands are not as strong or rough as in adults.
To play in the dirt, to pitch to fall and knees and elbows, is anything other than possibly to a chair tearing hands, simply due to poor workmanship.