1) the back cushion and seat cushion can be adjusted up and down /forward and backward 2)PP Back and seat frame,PP+ fiber +ABS material fixed armrest 3) High density mould foam 4)Single lever control mechanism 5)the ABS environmental protection material 6) PP base 7) PU wheel Dimmensions 59*70-80*80-100 cm Height adjustable 80-100 cm