I like the idea of carrying your carseat on your back in a backpack, but this product is not well-designed. Even after my husband and I folded our Radian 65 down completely we had a very difficult time fitting it in this bag--it was as if the bag were designed for a different seat. The zipper broke as we were trying to get the carseat into the airport. We ended up having the airline put our seat in a plastic bag and checking it with our luggage. We threw this bag away.