It's been too long to recall makes/models of infant seats, but I am pretty sure they were Graco. The removable variety was great for us, and obviously allows you to transition in/out way easier. Didn't love the stroller part itself, but those have gotten better over the years too. I have seen a few more 3-wheeled strollers that are not solely jogging rigs, so I don't know if that is the new trend. Very high-tech looking and pretty cool.