Shoe insole
An insole providing cushioning and control of foot motion. The insole includes a stability cradle and a number of pods on the underside of the insole core or base. Some of the pods have different material properties selected to help control foot motion.
1. An insole for use in a shoe, the insole comprising:
a core having a shape conforming to the inside of the shoe and having a top side and a bottom side;
a stability cradle disposed on the bottom side of the core; and
a plurality of first pods having different firmness, each of the first pods configured to be disposed in a position under a lateral side of the heel and a plurality of second pods having different firmness, each of the second pods configured to be disposed in a position under a medial side of a heel, both first and second pods being configured to be disposed from the bottom of the core.
2. The insole of claim 1 wherein a first pod is selected from the plurality of first pods and a second pod is selected from the plurality of second pods that comprise-material having differing firmness.
3. The insole of claim 2 wherein the second pod is made of a firmer material than the material of the first pod.
4. The insole of claim 3 , wherein the firmness of the second pod is in the range of Shore C 45-50 and the firmness of the first pod is approximately Shore C 60.
5. The insole of claim 3 , wherein the firmness of the first pod is in the range of Shore C 50-55 and the firmness of the second pod is in the range of about Shore C 65-70.
6. The insole of claim 3 , wherein the difference in firmness of the selected pods is sufficient to control a selected rate of pronation.
7. The insole of claim 3 , wherein the difference in firmness of the selected pods is sufficient to control pronation during a type of activity for which the insole is designed.
8. The insole of claim 1 further comprising a midfoot pod disposed forward of the lateral heel pod and along a portion of the insole corresponding to the lateral side of the foot.
9. The insole of claim 8 , wherein the stability cradle includes an opening to accommodate a forefoot pod and the opening is shaped to extend beneath the 1 st metatarsal to allow the 1 st metatarsal to flex during toe off.
10. The insole of claim 1 , further comprising a forefoot pod disposed below the core in the portion of the insole corresponding to the ball of the foot.
11. The insole of claim 10 , wherein the stability cradle includes an opening extending beneath the 1 st metatarsal and the forefoot pod extends into the opening to enable flexing of the 1 st metatarsal during toe off.
12. The insole of claim 1 , further comprising a pod disposed from the insole in a region corresponding to the valgus.
13. The insole of claim 1 wherein the core comprises an EVA foam material.
14. The insole of claim 1 wherein the pods are removably affixed to the core.
15. The insole of claim 1 wherein the pods comprise a polyurethane material affixed to the core with a temporary adhesive.
16. The insole of claim 1 wherein the pods comprise a polyurethane material affixed to the core with a hook and loop fastener.