Frame: Alu. or Iron + PE rattan Weatherproof/colorfast/color optional 100% pure handcraft woven/ Structure: sturdy and safe Rattan wheelchairs for disabled peopleMaterial: 1) Frame: Top grade aluminum frame with powder-coated, light, strong and resistant.--The thickness of aluminum tube is 1.2mm 1.5, 1.8mm .Diameter of circle: 28, 25, 22, 19, 16mm,Edges of square: 50*50, 40*40, 25*25, 20*20, 15* ...