So we had a flora radian which worked fine in our van. It never loosen and stayed tight. I ordered a new petal radian after our wreck and it will not install correctly in our van The harness straps are different from the old radian we had. They are much harder to tighten and they do not fit my daughter as good like the old radian. Hard to explain but it is just weird. The latch straps are black not burgandy. The latch will not tighten correctly as it keeps loosening. So I now have "one of those radians." Boo Hoo I would have to use the seatbelt install after my daughter gains 2 more pounds anyway but since the harness straps changed I am not sure if I am going to keep it. Anyway, the harness and latch straps are different from our old radian and iI am not a fan!