Before using the first time, immerse the Dia-Cool insulin cooling wallet in water for 1 hour. Later reloading takes about 20 minutes.
Next, dry the Cool-Pack and place it in the outer bag.
Depending on the external temperature, the Dia-Cool keeps your insulin cool for at least 48 hours. After that just dip the Cool element in cold water again. The Dia-Cool then cools again.