50x40cm, 37x39cm, or customized,   unit weight 2kg-5kg

Provides cooling comfort on its own, or enjoy a customized level of comfort when you use it with your favorite pillow;

Take it  for a good night's sleep anywhere;

Helps to relief from hot flashes, backaches, headaches, night sweats, sunburn, and sore feet;

Maximum cooling effect can be achieved by placing the pillow in the refrigerator for 15-30 minutes before use

Cold USE:  put the insert pad to the freezer for 5 mins, it can keep cool for 1 mins

 Hot USE:  Put the insert pad to microwave for 2 mins, it will keep heat for 3 hours