Trip to Calgary

[saltynuts]

you could also use heat packs. put them in a towel and put them in the cooler. i have used the ones you get at a drug store the ones for back pain

[TheReefGeek]

Heat packs are a good idea if I go the cooler/styro route, thanks Ed.

[Murminator]

I used a gel heat/cold pack and heated up in a microwave at a gas station and duct taped to the top of the cooler worked like a charm