Sole for athletic, work or leisure footwear comprising: a main or top component or mid-sole, said top component or mid-sole delimiting: a plurality of channels open towards the top or far from a tread component or from a base portion of the sole, said plurality of channels being set to accumulate the sweat of the foot of a user; and, at least one evacuation opening (5a, 5b) in fluid communication with said plurality of channels and leading to the outside of said sole for the evacuation of the sweat accumulated therein; said plurality of channels comprising: at least two main longitudinal channels (6, 7, 8) at least partly extended in the direction from the back to the front of the sole; at least two first transverse channels or terminal transverse channels (9, 10) at least partly extended in a direction from one side of the sole to the other; and, at least two second transverse channels or intermediate transverse channels (13a-13h) at least partly extended in a direction from one side of the sole to the other, said channels (6, 7, 8, 9, 10, 13a-13h) being in communication with each other so as to constitute a structure with islands or projections (14a, 14b, 14c) delimited and separated from each other by said channels; said sole further comprising a tread component, said top component or mid-sole being fixed or constrained to said tread component, wherein said sole comprises at least one tab or reinforcement rib setto reinforce or stiffen said sole at said at least one evacuation opening (5a, 5b), characterised in that said at least one tab or reinforcement rib is, during use, set or abutted from the outside or in any case from the sides against said top component at said at least one evacuation opening (5a, 5b), and wherein said at least one tab is extended starting from an edge or perimeter portion of said tread component, said at least one tab being made integrally or made of a single piece with said tread component. a plurality of channels open towards the top or far from a tread component or from a base portion of the sole, said plurality of channels being set to accumulate the sweat of the foot of a user; and, at least one evacuation opening (5a, 5b) in fluid communication with said plurality of channels and leading to the outside of said sole for the evacuation of the sweat accumulated therein; said plurality of channels comprising: at least two main longitudinal channels (6, 7, 8) at least partly extended in the direction from the back to the front of the sole; at least two first transverse channels or terminal transverse channels (9, 10) at least partly extended in a direction from one side of the sole to the other; and, at least two second transverse channels or intermediate transverse channels (13a-13h) at least partly extended in a direction from one side of the sole to the other, said channels (6, 7, 8, 9, 10, 13a-13h) being in communication with each other so as to constitute a structure with islands or projections (14a, 14b, 14c) delimited and separated from each other by said channels; at least two main longitudinal channels (6, 7, 8) at least partly extended in the direction from the back to the front of the sole; at least two first transverse channels or terminal transverse channels (9, 10) at least partly extended in a direction from one side of the sole to the other; and, at least two second transverse channels or intermediate transverse channels (13a-13h) at least partly extended in a direction from one side of the sole to the other, said channels (6, 7, 8, 9, 10, 13a-13h) being in communication with each other so as to constitute a structure with islands or projections (14a, 14b, 14c) delimited and separated from each other by said channels; said sole further comprising a tread component, said top component or mid-sole being fixed or constrained to said tread component, wherein said sole comprises at least one tab or reinforcement rib setto reinforce or stiffen said sole at said at least one evacuation opening (5a, 5b), characterised in that said at least one tab or reinforcement rib is, during use, set or abutted from the outside or in any case from the sides against said top component at said at least one evacuation opening (5a, 5b), and wherein said at least one tab is extended starting from an edge or perimeter portion of said tread component, said at least one tab being made integrally or made of a single piece with said tread component.