Abstract: The disclosed invention is directed to a footwear midsole configured as a rigid support comprising a cavity that includes a plurality of fluid-filled bladders. The bladders are formed from an elastomeric material that allows exclusive top-down compression of the midsole. Accordingly, the midsole provides a reactive opposed rebound force supplied by the elastomeric covering in response to compression. Advantageously, no outsole and/or insole is required, and the midsole can optionally be used alone in a shoe or other item of footwear.

Abstract: The presently disclosed subject matter is directed to a footwear midsole configured as an air-filled bladder formed from one or more exterior walls. The interior of the midsole comprises one or more fluids (e.g., gases or liquids). The midsole further includes a covering that partially or fully covers the interior compartment. The covering is formed form an elastomeric material that allows exclusive top-down compression of the midsole. Accordingly, the midsole provides a reactive opposed rebound force supplied by the elastomeric covering in response to compression.