Abstract: The invention relates to a sole, midsole, insole or sole insert for an article of footwear, such as a shoe or a boot, sandal, trainer or wellington boot. The sole, midsole, insole or sole insert 10 comprises a matrix structure 12 defining passageways 26, 30 extending between the upper and lower surfaces of the sole, midsole, insole or sole insert. The sole, midsole, insole or sole insert further comprises one or a plurality of sheet members 14, 16, 18, 20, 22 substantially within the matrix structure and forming a continuous molding therewith, the or each sheet member being convex so that the apex of the or each sheet member approaches and faces the upper surface of the sole, midsole, insole or sole insert. The or each sheet member 14, 16, 18, 20, 22 is made from an elastomeric material so that each sheet member acts as a leaf spring.

Abstract: The invention relates to a sole, midsole, insole or sole insert for an article of footwear, such as a shoe or a boot, sandal, trainer or wellington boot. The sole, midsole, insole or sole insert 10 comprises a matrix structure 12 defining passageways 26, 30 extending between the upper and lower surfaces of the sole, midsole, insole or sole insert. The sole, midsole, insole or sole insert further comprises one or a plurality of sheet members 14, 16, 18, 20, 22 substantially within the matrix structure and forming a continuous moulding therewith, the or each sheet member being convex so that the apex of the or each sheet member approaches and faces the upper surface of the sole, midsole, insole or sole insert. The or each sheet member 14, 16, 18, 20, 22 is made from an elastomeric material so that each sheet member acts as a leaf spring.