An absorbent core (101, 501) comprising: a front portion; a back portion; a middle portion positioned between the front portion and the back portion; and a longitudinal axis extending along a length of said core (101, 501) and crossing said front, middle and back portions (122, 126, 124), the absorbent core (101, 501) having a width extending perpendicular to said length and a perimeter comprising at least two opposing ends (102, 103) and at least two opposing sides (104, 105) positioned between said ends (102, 103), said core (101, 501) being a multi-layer core comprising at least a first and a second distinct core layers positioned one on top of the other, characterized in that a first core layer (502, 602) comprises a first concentration of super absorbent polymer therein and a second core layer comprises a second concentration of super absorbent polymer therein wherein at least said first core layer comprises one or more channels, said channel(s) being continuous and interconnected at least along the length and the width of said core (101, 501) such that at least two channel portions (107, 108) extending along said length are in fluid communication via a connecting channel portion positioned proximal to said back portion and in that the second core layer comprises a first region of superabsorbent polymer particles on a surface thereof that is opposite said first core layer, said first region being disposed in a pattern that follows the shape of the channel(s), at least along a plane formed by the core length and width, such that the shape of said channel(s) is substantially equal to that of said pattern, wherein the second core layer is positioned below the first core layer and wherein said first and second concentrations are different. a front portion; a back portion; a middle portion positioned between the front portion and the back portion; and a longitudinal axis extending along a length of said core (101, 501) and crossing said front, middle and back portions (122, 126, 124), the absorbent core (101, 501) having a width extending perpendicular to said length and a perimeter comprising at least two opposing ends (102, 103) and at least two opposing sides (104, 105) positioned between said ends (102, 103), said core (101, 501) being a multi-layer core comprising at least a first and a second distinct core layers positioned one on top of the other, characterized in that a first core layer (502, 602) comprises a first concentration of super absorbent polymer therein and a second core layer comprises a second concentration of super absorbent polymer therein wherein at least said first core layer comprises one or more channels, said channel(s) being continuous and interconnected at least along the length and the width of said core (101, 501) such that at least two channel portions (107, 108) extending along said length are in fluid communication via a connecting channel portion positioned proximal to said back portion and in that the second core layer comprises a first region of superabsorbent polymer particles on a surface thereof that is opposite said first core layer, said first region being disposed in a pattern that follows the shape of the channel(s), at least along a plane formed by the core length and width, such that the shape of said channel(s) is substantially equal to that of said pattern, wherein the second core layer is positioned below the first core layer and wherein said first and second concentrations are different.