Impact reduction footwear through heel and metatarsal cavities

Abstract

A three-layered article of footwear construction having an outsole, midsole, and footbed. The outsole is made out of a rubber and has a mating relationship with the midsole. The midsole is made of a single density blown ethylene-vinyl acetate copolymer (EVA). The midsole includes a first air cavity in the forefoot region and a second air cavity in the hind foot. The air cavities act like a suspension units under the impact areas of a foot giving improved impact reduction and help in reducing muscular and joint stress, fatigue, and impact during the normal walking gait motion. The footbed is made of a dual-density EVA. The dual density of the footbed allows for a greater flexibility and cushioning in the forefoot and heel regions due to its lighter density and provides greater support and stability around the perimeter area of the footbed due to its heavier density.

Dependencies are inferred from the claim text.