... or aluminum alloy rim 3.Size: 16", 18", 20", 24" 4.Color; Red, blue..... New model children bicycle, 16",18",20",24" unicycleModel ... No.: U-16A (16", Aluminum rim or stell rim) Features: 1) Size: 16" wheel2 ... moulded foam upper and plastic bumpers at front and back. 12) Loading: >90kg 13) Packing: 1pc/ctn Carton dimensions: 50 x ...