Designed for use in the Phase Change Cooling Vests with front zipper
-Safe, effective, and comfortable,non-toxic and non-flammable
-Use additional inserts for continuous relief
--Maintain a comfortable 14ºC temperature for up to 3 hours
-Made from high strength polyurethane
-Include four (4) Phase Change Cooling Inserts per set
-Total Weight: 5 lbs … for use with PROCOOL PHASE CHANGE COOLING VEST

Phase Change Material: 
Phase Change Material (PCM) is non-toxic, non-flammable and non-combustible.
Phase Change Material is 30% lighter than water.
Phase Change Material (PCM) releases long-lasting, temperature-specific (14 degrees C), cooling relief
Can be activated in ice water, no electricity required

Phase Change Cooling Inserts are activated n ice water or the freezer. They will re-charge in any environment where the temperature is below 14°C.

Simply place them n ice water or the freezer for 45 minutes to ensure that they are solid all the way through.

Please note that Phase Change Material solidifies fro the outside in, so they may look solid after 15 minutes but need full 45 minutes to be solid all the way through.