Otafuku Women's Magnet & Uneven Insole Sandals Ikiikimesh Black Made in Japan 1 million pairs sold within one year in Japan and Asia. Ergonomically designed sandals since 1968. Absolutely washable, tough from water/rain and firmly made arch for ease of on/off. Proudly made in Japan. Japan Quality. Permanent magnet in the bottom (a total of 6 for each pair). Specially blended resins.