Patent ID: 8042287

Claim:
Plastic insole comprising: a curve support ( 1 ) for the metatarsus, the curve support ( 1 ) including: a toe region ( 5 ), a metatarsal region ( 6 ), a heel ( 21 ) a plurality of longitudinally extending stiffening ribs ( 2 , 3 , 4 ) and a plurality of grooves ( 7 , 8 , 9 , 10 ) formed on a region of greatest height of the curve support ( 1 ) on an underside of the insole, said grooves ( 7 , 8 , 9 , 10 ) extending from the toe region ( 5 ) in a direction of the heel ( 21 ), curving toward a lateral side of the metatarsal region ( 6 ) of the curve support ( 1 ), and terminating in the metatarsal region ( 6 ) of the curve support ( 1 ), and a spring strip ( 23 , 24 , 25 , 26 , 27 ) issuing from each toe of the toe region ( 5 ), wherein material can be removed from the spring strips ( 23 , 24 , 25 , 26 , 27 ) and stiffening ribs ( 2 , 3 , 4 ) in order individually to adapt the thickness thereof.