Footwear with an inner sole having upwardly projecting raised flat foot support platforms with foot stimulating, dome-shaped, spaced massage bumps, and non-specific rounded projections on the areas of the inner sole not occupied by the platforms, and the platforms having a lightly stippled surface on...http://www.google.sh/patents/US4694831?utm_source=gb-gplus-sharePatent US4694831 - Massage footwear
