K.D.
I bought one called "baybee cool". It was about $60, which I think is expensive, however I use it everday. While I am at work, it sits in my son's carseat so when I pick him up in the aftenoon his carseat is cool. It has 2 big pockets for 2 big freezer packs that last all day. We are expecting again and I plan on buying another for this baby's carseat.