When can your baby join you on a bike ride? It comes down to head control and...

https://star-wiki.win/index.php/When_Should_I_Switch_from_a_Bike_Trailer_to_a_Bike_Seat%3F

When can your baby join you on a bike ride? It comes down to head control and sitting unassisted. After years of fitting seats and trailers, I will help you spot the right readiness cues and choose the best gear so you can ride safely together.