When Luna is born, her mommy gives her a little red stroller. It accompanies her and her mommy through all the activities of their day, until she outgrows the stroller and is able to pass it down to a toddler in her neighborhood who now needs it. And so the stroller lives on, getting passed from one child to the next, highlighting for preschool readers the diversity of families: some kids with two mommies, some with two daddies, some with just one parent, and all from different cultures and ethnicities. This simple, cheerful book is a lovely portrait of the variety and universality of family.