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

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