of the raised outer edge 2 making it apparent that the raised outer edge 2 extends beyond the thickness of the forefoot region 7 and the insole 1 the silicone cork mixture in the region of the raised outer edge 2 has been ground down to the height shown fig2 a and 2 b show the dimensional extent of a pad 3 of silicone cork mixture in the metatarsal region pad 3 having been ground to the thickness shown fig2 b shows a section along line ii ii of fig2 a it being evident therefrom how the forefoot region 4 and the heel region 5 each directly adjoin the pad 3 which therefore as shown in fig2 a is completely surrounded by the silicone of the insole fig3 a and 3 b show the insole 1 with the silicone cork mixture in the heel region 6 fig3 a presenting a top plan view and fig3 b presenting a side view the height of the cork mixture in the heel region 6 which is customizable by grinding serves to exert a favourable influence on the rolling behaviour of the foot during walking the use of the silicone cork mixture and forming the remainder of the insole from silicone provides at the transition points direct homogeneous silicone connections which penetrate from the silicone in regions outside the silicone cork mixture into the silicone cork mixture wherein the silicone encapsulates the cork particles and thus establishes not only a connection with the cork particles but also a connection with silicone of the other region of the insole itself thus in effect results with regard to the silicone in formation of a homogeneous body from which the regions of.