These are slim and have good cooling power. As seen in my photo they are almost as big as a * box.

Stays frozen/cold for 3-4 days, plenty long enough and a short time in a freezer to refreeze. Seems to hold the chill. Soft-sided cooler stays looking brand new.

Received a 10 pack of these ice packs as a gift from our wedding (appropriately bundled with a cooler gift) bought these for hubbys lunch box. Would recommend these freezer packs.

Perfect for storing food in a lunch bag or while carry meat or beer for a camping ground. Fits perfectly in cooler and keeps food cold. Good size for larger lunch bag and ice chest.