Wanted to pass along a mommy hack that worked great for me. The Diono RXT fits pretty snug into the Uppa Baby umbrella stroller (forgot the name). Then with 4 bungee cords secure - the DIONO has a hole on each side that fits the bungee hook which I ran to the latches on the stroller you pull to close the stroller. You place one on each side. Then at the bottom of the car seat (the addition you add when doing a reversed seating) you run two more bungee cords which latch on to the stroller - one to the bottom near the wheels and the other around a thick section of material. it was so unbelievable snugg that I felt.100 perfect safe placing my child in it. of course at the end of the day you as momma will need to make that call as this is an unofficial and unapproved hacked. I wished I had taken a picture to show you all - if I have time I will put it together as it doesn't take long at all.