Footwear Insole

An insole for an article of footwear, wherein the insole has a lateral side and a medial side, a heel end and a forefoot end, and a heel portion, midfoot portion, and a forefoot portion, the insole comprising:

• a chassis extending from the heel end of the insole to the forefoot end of the insole and defining a support member opening extending from the heel portion to the midfoot portion of the insole;
• a support member covering the support member opening of the chassis;
• wherein the support member has an upper surface and a bottom surface opposite to the upper surface;
• wherein the support member comprises a first material, the chassis comprises a second material, and the first material is more rigid than the second material;
• wherein the support member has
• a central rib protruding from the bottom surface of the support member and extending generally in a straight line parallel to a longitudinal direction of the insole from the midfoot portion of the insole toward the heel portion of the insole;
• a first medial side rib protruding from the bottom surface of the support member, extending generally in the longitudinal direction from the midfoot portion of the insole toward the heel portion of the insole, being disposed medial to the central rib, and being convex with respect to the central rib;
• a second medial side rib protruding from the bottom surface of the support member, extending generally in the longitudinal direction from the midfoot portion of the insole toward the heel portion of the insole, being disposed medial to the first medial side rib, and being convex with respect to the central rib;
• a first lateral side rib protruding from the bottom surface of the support member, extending generally in the longitudinal direction from the midfoot portion of the insole toward the heel portion of the insole, being disposed lateral to the central rib, and being convex with respect to the central rib;
• and
• a second lateral side rib protruding from the bottom surface of the support member, extending generally in the longitudinal direction from the midfoot portion of the insole toward the heel portion of the insole, being disposed lateral to the first lateral side rib, and being convex with respect to the central rib.

An article of footwear comprising:

• an upper;
• an outer member connected to the upper and configured to contact a ground;
• an insole disposed inside the upper and against the outer member;
• wherein the insole has a lateral side and a medial side, a heel end and a forefoot end, and a heel portion, midfoot portion, and a forefoot portion;
• wherein the insole comprises a chassis and a support member;
• wherein the chassis extends from the heel end of the insole to the forefoot end of the insole and defines a support member opening extending from the midfoot portion to the heel portion of the insole;
• wherein the support member covers the support member opening;
• wherein the support member comprises a first material, the chassis comprises a second material, and the first material is more rigid than the second material;
• wherein the support member has a bottom surface facing the outer member and an upper surface opposite to the lower surface;
• wherein the support member has a central rib protruding from the bottom surface of the support member and extending generally in a straight line parallel to a longitudinal direction of the insole from the midfoot portion of the insole toward the heel portion of the insole;
• wherein the support member has a medial side rib protruding from the bottom surface of the support member, extending generally in the longitudinal direction from the midfoot portion of the insole toward the heel portion of the insole, being disposed medial to the central rib, and being convex with respect to the central rib;
• and
• wherein the support member has a lateral side rib protruding from the bottom surface of the support member, extending generally in the longitudinal direction from the midfoot portion of the insole toward the heel portion of the insole, being disposed lateral to the central rib, and being convex with respect to the central rib.