DD has an unexpired Graco SR 35 that still totally fits her. She is 11mo and doesn't REALLY need an infant seat any longer although we just used it in the stroller on Tuesday because she fell asleep on the way to DS3's doctor appointment. I need a new car seat now because she is totally pulling gobs of fuzz from the underside of her car seat "liner" and eating it!
Is there a certain kind of convertible that maybe does not have this problem?