Abstract: This invention relates to a new shock absorber which may be used as an insole or as a midsole for an article of footwear. The shock absorber comprises a multi-cell membrane which may be embedded in a flexible envelope or which may be used itself as a one-piece multi-cell membrane insole or midsole. The shock absorber exhibits improved shock absorbing characteristics which increases the comfort of the wearer of the shoes and reduces damage to the foot during athletic exercises.

Abstract: A novel shoe incorporating a new sole and wedge-shaped arch support. The sole includes a plurality of sealed alveoli or air-chambers of different shapes which provide sufficient flexibility and resiliency to the shoe to reduce many of the common problems encountered by athletes. The alveoli are sealed in the sole by a mid-sole and an air-chamber member being sealed together in a simple and efficient manner.