1)Can get cooling in the fridge or get heated in the micro-oven
2)PVC material, flexible after cooling or heated, put into head support, Tied on the head, comfortably
3)Wearable protective cover,Superior breathability,Layered design for insulation fit,
Reusable & washable,Scientifically tested,Environment-friendly material without any side-effect
4)Non-toxic, non-caustic material inside. Learn More