DS was around 2 i think. It was definately after DD came along and only on short trips. He started out on a leash. Then when i knew he wasnt going to run off, probably 6 months ago, he now just walks and holds the pram. But doing it that way with DS also meant he never faught me to get into the pram. He knew thats where he sat. DD is way too young for me to let her walk.. also in saying that, if she was out walking it would take us all day to get from one end of the shops to the other.