Kids' bikes with foot brake

Foot (pedal) brake

— in order to slow down, you need to press the pedals in the opposite direction; braking itself is provided by pads inside the rear hub. Pedal brakes are simple, inexpensive, maintenance free, and reliable enough to make them extremely popular on kids bikes. Their main disadvantage is that when the chain falls off, the bike loses the rear brake; however, the likelihood of this is not so high that this moment is critical.