I bought the stool knee because my old knee stool collapsed. Something me has the maximum weight of 70 kg deterred, however, as this knee stool is significantly cheaper than comparable models plus all were fairly badly, I purchased this same twice once for my wife. Already after a few days both chairs arrived. The assembly has worked very well. Since the basic structure is different than that of comparable products not made of wood but of metal, this is very stable. The pads are also very convenient. Overall I am very satisfied with this knee stools and would recommend it anytime.