Footwear bottom with composite structure comprising: - a wedge-like rigid supporting body comprising a horizontal wall circumscribed by a perimeter edge, having an upper flat edge, suitable to define a compartment inside said body; wherein said perimeter edge has a minimum height in correspondence of the tip of the body and an increasing height in the direction of the heel, since it comprises two rectilinear side walls with ascending direction, which are connected at the back, starting from the point of maximum height, by a substantially semicircular wall having a lower height; wherein the connection between said point of maximum height of each one of said side walls and the respective end of said semicircular wall is ensured by means of a tooth that is inclined in the direction of said semicircular wall; - an insert made of elastically compressible material, comprising • a central supporting body suitable for being exactly fitted inside the compartment circumscribed by said perimeter edge of the body; • an upper horizontal wall with anatomical profile, suitable for being disposed on top of the body, in such a way to act as support surface for the user's foot during use; wherein said upper wall has a higher width than said central body, in such a way that the perimeter edge is overlapped in step-like configuration to said upper flat edge provided on top of the perimeter edge of the body; and wherein said perimeter edge of said insert comprises a first section with constant thickness, which substantially extends from the tip of the body until said two points of maximum height of the rectilinear sides of the body, and a second section with higher thickness, which extends from said points of maximum height of the rectilinear sides of the body until said semicircular wall of the body; wherein said body is made of PVC mixed with cork. - a wedge-like rigid supporting body comprising a horizontal wall circumscribed by a perimeter edge, having an upper flat edge, suitable to define a compartment inside said body; wherein said perimeter edge has a minimum height in correspondence of the tip of the body and an increasing height in the direction of the heel, since it comprises two rectilinear side walls with ascending direction, which are connected at the back, starting from the point of maximum height, by a substantially semicircular wall having a lower height; wherein the connection between said point of maximum height of each one of said side walls and the respective end of said semicircular wall is ensured by means of a tooth that is inclined in the direction of said semicircular wall; - an insert made of elastically compressible material, comprising • a central supporting body suitable for being exactly fitted inside the compartment circumscribed by said perimeter edge of the body; • an upper horizontal wall with anatomical profile, suitable for being disposed on top of the body, in such a way to act as support surface for the user's foot during use; wherein said upper wall has a higher width than said central body, in such a way that the perimeter edge is overlapped in step-like configuration to said upper flat edge provided on top of the perimeter edge of the body; and wherein said perimeter edge of said insert comprises a first section with constant thickness, which substantially extends from the tip of the body until said two points of maximum height of the rectilinear sides of the body, and a second section with higher thickness, which extends from said points of maximum height of the rectilinear sides of the body until said semicircular wall of the body; wherein said body is made of PVC mixed with cork. • a central supporting body suitable for being exactly fitted inside the compartment circumscribed by said perimeter edge of the body; • an upper horizontal wall with anatomical profile, suitable for being disposed on top of the body, in such a way to act as support surface for the user's foot during use; wherein said upper wall has a higher width than said central body, in such a way that the perimeter edge is overlapped in step-like configuration to said upper flat edge provided on top of the perimeter edge of the body; and wherein said perimeter edge of said insert comprises a first section with constant thickness, which substantially extends from the tip of the body until said two points of maximum height of the rectilinear sides of the body, and a second section with higher thickness, which extends from said points of maximum height of the rectilinear sides of the body until said semicircular wall of the body; wherein said body is made of PVC mixed with cork.