It's a bit small for a 5-year-old to ride on a bicycle. It's perfect for riding on a kickboard.

As for sturdiness, the main absence of the material is plastic, which is unfortunate, and especially when my 4-year-old daughter was in sit-down riding mode, the mode in the photo was the one that was set to the highest setting. When I sit down, I feel slurred. It seems best to use it around 2 years of age.

If separation occurs with the hexagonal lens, the middle lever part must be slightly tightened. The accessories (stickers, pinwheels) included in the service are unnecessary, so I think it would be better without them. Ambiguous part: For an 18-month-old child, sitting and riding is uncomfortable because the feet touch the front wheel, so I pass. Instead, it seems to be used for combining the footrest, placing the child on it, and just dragging it around. Because it is difficult to handle, a child (18 months old) with no center of gravity cannot ride it. A child of an age that knows how to use the minimum center of gravity can ride it. The flash button on the handle is embedded and difficult to operate. I couldn't confirm the battery-operated melody part (it's said to be in Chinese, so I just didn't use it).