Patent ID: 7621058

Claim:
Footwear comprising an upper assembled with an outsole and an insole, the outsole having an outsole forepart and an outsole back part, wherein the outsole forepart is relatively deformable transversally as compared to the outsole back part, wherein the outsole comprises a sole base, wherein a forepart of the sole base is provided with at least one longitudinally oriented opening, said sole base opening being continuous and extending substantially from a toe area substantially to an arch area of the sole base, and a sole base insert mounted to the sole base, wherein the sole base insert is mounted to the sole base so as close said at least one sole base opening, the sole base insert material being relatively deformable transversally as compared to the sole base material, and the insole comprising an insole forepart and an insole back part, wherein the insole forepart is relatively deformable transversally as compared to the insole back part, wherein the deformable forepart of the insole comprises at least one of (i) a longitudinal slit or longitudinal opening, said insole slit or opening being continuous and extending substantially from a toe area substantially to an arch area of the insole, and (ii) a longitudinal opening, said insole opening being continuous and extending substantially from a toe area substantially to an arch area of the insole, said opening being filled by an insole insert of stretchable material, so that a pressure on lateral edges of the upper applied by a foot inserted in the footwear produces a transversal deformation of the superposed insole and outsole as a whole.