Patent ID: 7617618

Claim:
An insole ( 1 ) for footwear having an underside and a foot facing side, the insole being adapted to the profile of a human foot, comprising: in a central foot section an elastically deformable dome-shaped arch ( 2 ) facing the human foot, wherein the arch ( 2 ) exhibits at least one ventilation opening ( 3 ), which during walking and in conjunction with the elastic form of the arch ( 2 ) provides ventilation of the shoe interior characterized in that the arch at the underside of the insole ( 1 ) exhibits a structure which in profile view has side walls ( 15 , 16 ) which run together to form a convex shape and are interrupted by an indentation ( 14 ) in the central section of the arch ( 2 ) and in that the so formed structure adapts mechanical characteristics of the insole pertaining to stiffness and comfort.