made of 304# stainless steel with magnesium alloy wheels 2 pcs of rear wheelsand 1piece offront wheel air wheels(pneumatic wheels) available, high quality class height of handle adjustable both handle and frame foldable fold size:70*32*15cm N.W. inlcuding frame and magnesium alloy wheels :6.5KGS G.W.:8.5KGS packing size:75*35*20