Sports footwear incorporating a plurality of inserts with different elastic response to stressing by the user's foot

Abstract

Sports footwear with a vamp, and a lower support part including a sole unit, the lower support part having a lower portion or treading sole for contacting the ground and an intersole overlying the treading sole, wherein within said support part there is present at least a first insert containing elements which deform elastically when subjected to pressure and which are enclosed within an air-containing sealed casing positioned corresponding with the heel region of the sole unit. A further insert is positioned corresponding with the metatarsal region of the foot and also includes a casing containing elements deformable when subjected to pressure. The deformable elements positioned in the insert corresponding with the heel region have a different response to pressure-stressing than the elements present in the insert corresponding with the metatarsal region of the foot.

Dependencies are inferred from the claim text.