Just awesome these things. Since Dad has something to play. Super bright, however, keep the batteries at full illumination is not very long. But it will be seen from a distance and automatically draws attention to itself. Positive side effect: The cars are slower because you have to watch what yes there because driving for a strange vehicle with front and rear lights on the sidewalk. :-) Also very convenient if you in the dark with the stroller on the street muß.Wir have two directly mounted from the parts to the buggy. And our daughter is the light also sooo great.