Starting with a single capacity stroller, the Baby Jogger City Select 2012/2013 utilizes a patented attachment method that allows you to adjust your stroller seating as your family grows. This stroller will give both mom and baby a much smoother ride. And with Baby Jogger's patented Quick-Fold Technology, this stroller is the only in-line stroller to fold flat in one simple step. This is definiltely something that provides a lot of wonderful results. Parents will not regret buying the Baby Jogger City Select especially if they live an active lifestyle. They can now take their kids on their regular jogging paths. This means they can still exercise even if they already have a baby. This is a big benefit because parents can still keep their fit body.