Patent ID: 7478487

Claim:
A breathable sole structure having a lower face ( 2 ) which in practice forms the tread of an item of footwear to which the sole is applied, and an upper face ( 3 ) which is practice can face the inside of the item of footwear to which the sole is applied, the breathable sole structure ( 1 ) having at least one ventilation duct ( 4 ) extending from an inlet section ( 5 ) made in the upper face ( 3 ) to an outlet section ( 6 ) made in the lower face ( 2 ), the sole structure being characterised in that the duct comprises at least one main stretch ( 7 ) extending in a plane substantially parallel with a longitudinal direction of extension of the breathable sole structure ( 1 ) and having a first end ( 8 ) and a second end ( 9 ) in fluid communication with the duct outlet section ( 6 ), and also being characterised in that it also comprises at least one dome-shaped portion ( 10 ), made of an elastically deformable material and extending in a raised fashion from the upper face ( 3 ), said dome-shaped portion ( 10 ) forming inside it a chamber ( 11 ) in fluid communication with the first end ( 8 ) of the main stretch ( 7 ) of the duct and having an opening which puts in communication the chamber ( 11 ) and the outside of the upper face ( 3 ) and which forms the ventilation duct ( 4 ) inlet section ( 5 ).