I LOVE this picture. This looks like so many pictures I remember of us as little kids, hanging out on my dad's back.
So it was only fitting that when friends of my dad's went into business selling an updated version of the Gerry pack, Grandpa and Grandma got one for us! We love it. It is a Kokopax, and it is so convenient for places you do a lot of walking, that are not super stroller friendly (dog park, hiking, places with big crowds, etc.).
Cooper loves it too. More comfortable mamma means he gets to spend more time at the DP, because even after an hour, my back/shoulders are still okay.