Ventilated shoesole

A sole for footwear, the sole comprising:

• a first layer having a plurality of through orifices and configured to be connected to an upper of a footwear and to form an inner environment of the footwear;
• a second layer coupled to said first layer and comprising a plurality of chambers;
• one or more channels or passages fluidly connecting said plurality of orifices and said plurality of chambers;
• a pressurization device in fluid communication with said one or more channels or passages and configured to increase an air pressure in said plurality of chambers;
• and
• one or more regulating valves in fluid communication with said one or more channels or passages and configured to adjust a pressure in said plurality of chambers;
• wherein said pressurization device and said one or more regulating valves are configured to control the flow of air from said plurality of orifices to said plurality of chambers and vice versa, between a dynamic ventilation condition and at least one static condition;
• wherein in said dynamic ventilation condition, said pressurization device and said one or more regulating valves are configured to allow the passage of air between said plurality of orifices and said plurality of chambers and vice versa;
• and wherein in said at least one static condition, said one or more regulating valves are configured to prevent or hinder a passage of air between said plurality of chambers and said plurality of orifices;
• wherein in said at least one static condition there is a first static condition;
• and in said first static condition, the pressure inside the plurality of chambers is greater than the atmospheric pressure;
• and wherein said pressurization device and said one or more regulating valves are configured to control the air flow from said plurality of orifices to said plurality of chambers and vice versa, between the dynamic ventilation condition and a second static condition, wherein in said second static condition, the pressure inside the plurality of chambers is substantially equal to the atmospheric pressure;
• and
• wherein in said first static condition, the plurality of chambers has a first volume (v1) and wherein, in said second static condition, the plurality of chambers has a second volume (v2), wherein said second volume (v2) is smaller than said first volume (v1).