Reusing ice mask

Material: PVC
Thickness: 10 (mm)
Cold compress: put it in the freezer or freezer for 30 minutes or put it in the refrigerator for about 3 hours before use. Please put it in the refrigerator when not in use. (Can be stored at room temperature)
Hot compress: Put the mask directly into 50-60 degrees Celsius warm water for 15 minutes to use; or put the mask into a microwave oven with a power of 800 watts for 15 seconds.