... Charcoal Pillow 1.It is very helpful to your health, sleeping; 2.It can promote blood circulation. 3.100% nature,safty Bamboo Charcoal ... PillowThe product contain high quality bamboo charcoal granule and polyester fiber,Charcoal, effectively purify water, absorb humidity ... circulation of your head, neck & shoulder,Improve sleep quality and healthy to your body.