A travel system is the perfect solution for infant transportation, merging your infant car seat and your stroller into a single piece during the earliest months of your child's life. You can simply click the car seat into the base in your car or into your stroller, enabling you to transfer your child between the two without undoing straps (or disturbing naps). But there are so many great choices of baby strollers and car seats out there - why choose each from a single brand? With the Baby Jogger Car Seat Adapter for the UPPAbaby MESA / City Mini, you can enjoy the merits of both brands and a travel system at the same time. Just click the two adapter pieces onto your Baby Jogger stroller, and you've created a simple mounting bracket that gives you click-and-go functionality with your car seat. It's so easy! This Baby Jogger MESA Adapter works with the Baby Jogger City Mini, Baby Jogger City Mini GT, Baby Jogger City Elite, Baby Jogger Summit XC, and Baby Jogger Summit X3 models. For the City Select or City Versa Strollers, you'll need the adapter model BJ90324.