Uppa Baby Infant Car Seat Uppa Baby Cruz Stroller with Toddler Seat These are interchangeable. The Uppa Baby stroller can attach to the Mesa Infant car seat or the toddler seat. Both the infant car seat and toddler seat can face forward or backwards. The car seat has never been in an accident and good until May 2021. Has minor stains on the straps. The stroller has a screw missing but manufacture has stated it is not a crucial piece. Also, the back wheel at times will get stuck after releasing the break but is a very easy fix. I will show you all the ways the stroller can interchange upon pickup. Please look at attached photo for all of the manufacturer details and descriptions. These items must sell together. Brand new this set is almost $1,000