The flashlights on the wheels will provide visibility to the bicycle and the stroller in the dark, and this is the safety of yours and your relatives, especially children.
Glow only when the wheels are in motion. The backlight lights up while the wheel is moving and goes out when it stops.
Powered by 3 AG10 batteries (not included).
4 flashlights included.
Dimensions: length - 63 mm * diameter - 18 mm.