The city of Seoul is going to add about 8-thousand more bicycles to its system of public bike rentals.
And these new bikes are not only sturdier, two thousand of them are in a smaller size so they can be used by children.
The bikes will start appearing on the city's streets by the end of the year.
And Seoul aims to replace the whole of its current fleet with the new models by 2022.
Seoul has hired 140 people since August to disinfect the bikes.