I love this product! We have multiple PackIt bags in our kitchen. I no longer have to worry that my kids lunches are overheating in their lockers at school. This bag keeps cool all school-day and eliminates the need for separate ice/cold packs, which run the risk of being thrown out with the lunch garbage. Cools in the freezer overnight and doesn't lose its cool until well after the kids are home from school. The bags hold up really well; not sure if this is suggested, but I've thrown them in the wash...they survived...Love it, I swear!