Abstract: A shoe pad structure having an air chamber, particularly a shoe pad structure having an air chamber with cushion effects and applicable to the heel or ball on a shoe sole, comprising a flexible unit installed in an air chamber composed of two flexible plastic films with depressed centers thereof, characterized in that: the flexible unit is installed in the center depression of the air chamber, forming a ring-shaped buffer air chamber at the rim of the flexible unit in the air chamber, thereby enabling better cushion effects to prevent possible injury from exercise.

Abstract: A method of making an elastic pad for a sole in footwear has the following steps. Form an elastomer, a positioning rod is extended from the elastomer, the positioning rod supports and positions the elastomer in a mold. Form gasbags, by enclosing the elastomer with heated plastic film in mold then close the halves of mold. An elastic pad is then formed. Trim the elastic pad along the pressed periphery which is formed by the mold closure on excessive plastic film.