noun
balance bike; run bike
A small bicycle without pedals, used by young children to learn balance before transitioning to a pedal bike.
2歳の息子にバランスバイクを買ってあげた。
I bought a balance bike for my 2-year-old son.
バランスバイクで遊ぶ子供たちが公園にたくさんいる。
There are many children playing on balance bikes in the park.