1)Back: PP + fiber material chair back waterproof, stain-resistant, dustproof, adjustable up and down angle 2)Mesh: 28% nylon, 25% polyester fiber, 47% polyester copolymer elastic Internet 3)Cushion. PP + fiber material sitting frame, can be adjusted up and down before and after. 4)Base: 64.5 * 55.5CM 5)Armrests: the surface of the armrests using ABS material, armrest frame using PA6 plus fiber materialchair 6)Wheel: exquisite gravity brake silent PU chair wheel 7)Handle: PA6 fiber material Dimmentions 60*80*78-86 cm Height adjustable 78-86 cm