sports footwear acquiring a cultural of inserts having different responses to stress relaxation of the foot

摘要

Sports footwear with a vamp (1), and a lower support part comprising a sole unit (3), this latter having a lower portion or treading sole (4) for contacting the ground and an intersole (6) overlying this treading sole, within said support part there being present at least a first insert (10A) containing elements (14) which deform elastically when subjected to pressure and are enclosed within an air-containing sealed casing (11) positioned in correspondence with the heel region (K) of the sole unit (3), and a further insert (10C) positioned in correspondence with the metatarsal region of the foot and also comprising a casing (11) containing elements (14) deformable when subjected to pressure. The deformable elements positioned in the insert (10A) in correspondence with the heel region (K) have a different response to pressure-stressing than the elements present in the insert (10C) in correspondence with the metatarsal region (M) of the foot. IMAGE