While I think this sign is much better and visible than any teddy bear or similar, I was disapointed to see that it also has some extra brand advertising wording printed on it which detracts attention from the important message. The selling site picture does not represented this so I think it is misleading.
On the plus side the sign is double sided, one side states "baby on Board" and the other one states "child on board" so it is more specific that other signs.
It is not very big but I think and hope it is big enough to be seen within the safety distance at least.