Product Features Bio neck cushion core:

consisting of a Bio Memory foam, this has an extremely pressure point elastic effect, it only gives way where the pressure is greatest. Visco Memory adapts perfectly to the shape of your head and offers very good support. Bio Visco Mind is a wonderful thermo regulator; its unique pores allow the air to circulate freely, thus ensuring a pleasant sleeping climate. This climate regulating property gives the pillow a lasting freshness and ensures a pleasant sleeping climate. Made from natural materials, essential oils and water.