Memory foam moulds to your shape so it gives excellent support but its not the softest of materials and tends to overheat this anatomically shaped pillow is topped with a new softer type of memory foam to improve comfort while ventilation holes and a breathable 3d cover allow air to continually circulate around your head to keep it cool the pillow and cover are also imbued with bamboo charcoal which is naturally absorbent deodorising anti bacterial and even generates healthy negative