A few other moms and I were walking in the park the other day and the subject of our strollers came up. “Ugh, I hate this stroller,” my friend complained as she kicked at its sleek, $800 dollar frame while trying to maneuver the tire out of the sand trap. The other moms sighed in agreement and cast disparaging looks at their own expensive strollers. I started to jump into my usual enthusiastic cheer for my Phil and Teds e3 (which converts to a double stroller and a jogger without taking up any additional footprint), but then I stopped.