Features adjustable height kneeling stool ensures perfect fit and support gas lift height adjustment shaped cushions bluesilver specifications seat a w420 x l320 x d40mm seat b w420 x l220 x d40mm total height 480 630mm length seat to frame 700mm length 660mm actual weight 95kg safe working load 17 stone 110kg covering material blue fabric carton size 670 x 470 x 205mm mechanism gas lift height adjustment