Production method of a composite-material component (10, 210, 310, 410, 510, 610, 710) of a footwear (1, 200, 300, 400, 500, 600, 700); said component being a monolithic body with a shell structure (10, 210, 310, 410, 510, 610, 710) that has at least one composite-material portion (11, 211, 311, 411, 511, 611, 711) and at least one elastomeric-material portion (12, 13, 14, 15; 212, 213, 215; 312, 313, 314, 315; 412, 413, 414; 512, 513, 514; 612, 613; 712) adjacent to one another; said at least one composite-material portion (11, 211, 311, 411, 511, 611, 711) and said at least one elastomeric-material portion (12, 13, 14, 15; 212, 213, 215; 312, 313, 314, 315; 412, 413, 414; 512, 513, 514; 612, 613; 712) extending for the full thickness of the monolithic body with a shell structure (10, 210, 310, 410, 510, 610, 710) and being joined to one another along the edge and without interruption; said production method being characterised by comprising the steps of: - placing/laying at least a first sheet of pre-impregnated fabric onto the surface of a mould that copies in negative the shape of the monolithic body with a shell structure (10, 210, 310, 410, 510, 610, 710) to be produced, while leaving uncovered the area of the mould corresponding to the elastomeric-material portion (12, 13, 14, 15; 212, 213, 215; 312, 313, 314, 315; 412, 413, 414; 512, 513, 514; 612, 613; 712) to be produced; - placing/laying a first elastomeric thermoplastic material film on the surface of the mould, in the area of the mould corresponding to the elastomeric-material portion (12, 13, 14, 15; 212, 213, 215; 312, 313, 314, 315; 412, 413, 414; 512, 513, 514; 612, 613; 712) to be produced, at least partially overlapping the edge of said first thermoplastic elastomeric-material film to said first sheet of pre-impregnated fabric; - placing/laying a sheet of non-vulcanized rubber over said first elastomeric thermoplastic material film, in the area of the mould corresponding to the elastomeric-material portion (12, 13, 14, 15; 212, 213, 215; 312, 313, 314, 315; 412, 413, 414; 512, 513, 514; 612, 613; 712) to be produced; - placing/laying a second thermoplastic elastomeric-material film over said sheet of non-vulcanized rubber, at least partially overlapping the edge of said second thermoplastic elastomeric-material film and said first sheet of pre-impregnated fabric and/or said first thermoplastic elastomeric-material film; and finally - extracting the air from the mould and then subjecting the mould and all its contents to a thermal baking cycle which simultaneously causes the vulcanization of the sheet of non-vulcanized rubber, and the polymerisation/reticulation and hardening of the thermosetting resin of said first sheet of pre-impregnated fabric. - placing/laying at least a first sheet of pre-impregnated fabric onto the surface of a mould that copies in negative the shape of the monolithic body with a shell structure (10, 210, 310, 410, 510, 610, 710) to be produced, while leaving uncovered the area of the mould corresponding to the elastomeric-material portion (12, 13, 14, 15; 212, 213, 215; 312, 313, 314, 315; 412, 413, 414; 512, 513, 514; 612, 613; 712) to be produced; - placing/laying a first elastomeric thermoplastic material film on the surface of the mould, in the area of the mould corresponding to the elastomeric-material portion (12, 13, 14, 15; 212, 213, 215; 312, 313, 314, 315; 412, 413, 414; 512, 513, 514; 612, 613; 712) to be produced, at least partially overlapping the edge of said first thermoplastic elastomeric-material film to said first sheet of pre-impregnated fabric; - placing/laying a sheet of non-vulcanized rubber over said first elastomeric thermoplastic material film, in the area of the mould corresponding to the elastomeric-material portion (12, 13, 14, 15; 212, 213, 215; 312, 313, 314, 315; 412, 413, 414; 512, 513, 514; 612, 613; 712) to be produced; - placing/laying a second thermoplastic elastomeric-material film over said sheet of non-vulcanized rubber, at least partially overlapping the edge of said second thermoplastic elastomeric-material film and said first sheet of pre-impregnated fabric and/or said first thermoplastic elastomeric-material film; and finally - extracting the air from the mould and then subjecting the mould and all its contents to a thermal baking cycle which simultaneously causes the vulcanization of the sheet of non-vulcanized rubber, and the polymerisation/reticulation and hardening of the thermosetting resin of said first sheet of pre-impregnated fabric.