Nikken 1155 Kenko Naturest Custom Magnetic Pillow. Inside the Kenko Naturest Custom Pillow is a special filler of shredded latex. Itâ€™s designed so that you subtract or replace filler to achieve the desired degree of firmness â€” your personal perfect fit. The latex is especially resilient, so it resists being compressed flat, unlike a down or foam pillow. A head and neck insert provides correct spinal alignment. Deep within the Custom Pillow is patent-pending RAM (radial-axis magnetism) Technology, a series of magnets arranged to surround you in a cocoon of magnetism. About many people that are searching for the perfect pillow support. Types that are looked for by wellness seeking people are: organic pillow, pillow contour, natural pillow, Japanese pillow, custom pillow, hypoallergenic and therapeutic, bamboo pillow and nikken pillow.