Hot water method :
1. Place the pack in hot water (max 80ºC) for 10 minutes.
2. Remove and wrap the pack in a dry towel before applying.
Microwave method :
1. Place the pack in a microwave oven (recommended below 800W).
2. Ensure that the gel is evenly distributed in the pack.
3. Heat the pack for 30 seconds at a low power setting. Heating times will vary with the power of the microwave.
4. If more heat is required, heat for another 10 seconds until the desired temperature is reached.
5. Cool the pack for at least 1 minute before applying.