J.S.
We opted for a bike trailer. We splurged for a Burley brand trailer (we found it used at Once upon a Child). It had a safety feature that if I were to tip over on my bike, the trailer would stay on its wheels. We had several people tell us not to get the seat on the back of the bike (one being an ER nurse at Children's Hospital). Those are very unsafe. The trailers have a cage to protect the child from any accidents.