Natural arch support for footwear

摘要

The invention relates to a natural arch support for footwear, said natural arch support being characterised in that it comprises a cavity (3) at the point corresponding to the first metatarsal-phalangeal joint, a profile of the medial arch wherein the slope of the arch descending toward the first metatarsal head is slightly steeper than the ascending curve, and flexure lines (4) on the inner and/or outer surface.