Para niñosbicicletas are one of the main categories of children's bicicletas. Children's bicicletas include four categories: children's bicicletas, strollers, baby walkers, and children's tricycles. When buying a bicicleta, consider the age and height of the child, and choose the appropriate size, that is, a bicicletacon una altura de sillín en el rango de 435-635 mm. Al comprar un vehículo, preste atención al tamaño del freno de mano. Si el tamaño es demasiado grande, el niño no podrá sujetar con fuerza el freno de mano al frenar y no podrá detener el automóvil. Así que lo mejor es llevar a sus hijos a probarlo cuando vayan de compras. Además, la fuerza de frenado no debe ser inferior a 50 N. De lo contrario, el vehículo no podrá detenerse, causando daños a los niños. De los niñosbicicletas are also equipped with protective wheels (balance wheels), which can keep the rider in balance, so pay attention to whether they are equipped (one on each side) when purchasing. It is necessary to consider this. The chain cover of children’s bicicletas is indispensable. Children’s bicicletas with a saddle height equal to or greater than 560mm should be equipped with a chain cover or other protective device to cover the outer surface of the chain and the meshing part of the sprocket. When meshing on the sprocket, the chain cover should extend beyond the outer side of the chain in the diameter direction. If the chain cover is not used but other protective devices are used, the covering range should be extended to the point where the sprocket initially enters the two sides of the chain. Measure at least 25mm along the chain.