Those who pedal a lot have to drink a lot. All the better when the little ones have their own drink with them and don't have to depend on adults.
The woom water bottle holds 0.5 liters and fits on all woom bikes (except woom 1 and woom 1 PLUS).
The corresponding water bottle cage was especially designed for the tight space on a kids' bike. The sideclip design makes it possible to load the water bottle sideways.