Would a double stoller work with a back pack carrier I have a babytrend side by side that I love, same idea as play and learn but newer. The tires are still big but not huge so it folds flat and fits in the back of my van. How old are the children, When I got mine I had two almost two year olds and a three year old, when the three year old is to slow or tired I just lay one of the seats down and put her behind one of the babies or she sits on the front, the foot rest is large and flat. I would do a lot of research on them before you spend the money if you are only doing short trips I probably wouldn't invest in a triple. It depends on the age and size of your children?