A footwear injection mould , the footwear injection mould comprising: - a primary injection mould and - a secondary injection mould, where the secondary injection mould is configured to be fixed relative to the primary injection mould, - the secondary injection mould defining at least part of an injection chamber for moulding a footwear part, said injection chamber comprises a proximal surface defining at least part of a distal surface of the footwear part, and where the secondary injection mould comprises at least one protrusion , where the at least one protrusion comprises an upper contacting surface for contacting an upper part of a footwear, a proximal end connected to the secondary injection mould, a primary surface faced away from the injection chamber , and a secondary surface faced towards the injection chamber , and where a normal (A) of the upper contacting surface is configured to intersect a centre point of the upper contacting surface seen in a height direction, and where a protrusion plane is defined by the normal of the upper contacting surface along a width of the protrusion, said protrusion plane configured to define a boundary between a primary half and a secondary half of the protrusion , the primary half arranged between the protrusion plane and the primary surface and the secondary half arranged between the protrusion plane and the secondary surface , and where a height of the proximal end (h2) of the protrusion is larger than the height of the upper contacting surface of the protrusion , relative to the normal (A) of the upper contacting surface , wherein the primary injection mould has a higher thermal conductivity than the secondary injection mould. - a primary injection mould and - a secondary injection mould, where the secondary injection mould is configured to be fixed relative to the primary injection mould, - the secondary injection mould defining at least part of an injection chamber for moulding a footwear part, said injection chamber comprises a proximal surface defining at least part of a distal surface of the footwear part, and where the secondary injection mould comprises at least one protrusion , where the at least one protrusion comprises an upper contacting surface for contacting an upper part of a footwear, a proximal end connected to the secondary injection mould, a primary surface faced away from the injection chamber , and a secondary surface faced towards the injection chamber , and where a normal (A) of the upper contacting surface is configured to intersect a centre point of the upper contacting surface seen in a height direction, and where a protrusion plane is defined by the normal of the upper contacting surface along a width of the protrusion, said protrusion plane configured to define a boundary between a primary half and a secondary half of the protrusion , the primary half arranged between the protrusion plane and the primary surface and the secondary half arranged between the protrusion plane and the secondary surface , and where a height of the proximal end (h2) of the protrusion is larger than the height of the upper contacting surface of the protrusion , relative to the normal (A) of the upper contacting surface , <EOS>