NO ICE PACKS, EVER AGAIN! - The FRIO wallet eliminates the need for ice packs. With no ice, your medication will not freeze - and your storage will be stress-free!WATER ACTIVATED COOLING - The FRIO evaporative cooler activates by simply soaking in water for 10-15 minutes - and then cools for 2-4 days. To re-activate simply soak again.
Can be bought on amazon
 
https://amzn.to/46bbObF