My Melody Cold Ring

• Inner width: approx. 10cm, outer width: approx. 15cm, neck circumference: approx. 34cm
• Uses new cooling material "PCM" and can be used repeatedly

[How to use].   
(1) Cool in cold water or in the freezer/refrigerator
(approximately 5-15 minutes in the freezer, approximately 20-30 minutes in the refrigerator *Freezing time may vary depending on the environment.)
(2) Once it becomes hard Wear the ring around your neck with the tip facing forward.