Comments about Kelty Kelty Diaper Daypack:
I originally bought the bag to zip onto my Kelty convert. carrier. It was very difficult to zip-on and when I finally got the zipper going it split apart. Not likely going to use it w/the carrier. Even if I could get the zipper to work, it's not an easy task, at least for my specific carrier.
Pros after all the diaper bags options I've tried this is the best. I'm pretty active and it has just enough pockets for the baby, me w/o going over board. Everything is easily accessable. Another issue b/c I were it as a back pack all the time. the straps have to be completely extended for it to be comfortable for me, I'm only 65" tall.