Cool58® Pack for the Breast Cooler Pack or Hat Insert Pack

How do Cool58® phase change cooling packs work? 

• Cool58® cooling packs freeze solid at a moderate and comfortable temperature of 58° Fahrenheit (14.4° Celsius), so they can be frozen in a freezer, refrigerator, or even a cooler of ice water. 
  
• Once activated, these reusable packs deliver comfortable cooling for up to 2 hours. (Please note: cooling times are estimates and will vary depending on climate, body metabolism and activity.)
• Packs are non-toxic and non-flammable.
• Packs do not require a freezer! Packs can simply be submerged in ice water or placed in a refrigerator or freezer to activate. Easy to use - packs can be activated by simply submerging the packs into ice water for up to 20 minutes when access to freezers is not available.
  
• Works in any climate - extreme heat and humidity are no problem! The cooling performance is not impacted by humidity or outside temperature.