My wife bought the carseat tote bag for our recent journeys with the little one. My complaint about the car seat bag is that the bag I had did not fit the seat well. The bag was a little bit smaller than the seat such that it took an extra 10 minutes to wrestle the seat into the bag. Our precious angel err child sat in the seat on the plane so that 10 minutes of stuffing time came out of the precious little time NWA gives you to get from the end of terminal F to terminal C in MSP. I got so frustrated with the bag, I ended up tossing the bag in my carry on bag and carrying the car seat by the child's shoulder straps across MSP.

My advice is that if you get the bag, get the bag made by and designed for your brand of carseat.