A method of making a seamless, anatomically contoured, prosthetic device for surgical implantation for supporting or maintaining the position of mammalian tissue, organ or structure or a replacement therefor, which comprises the steps of: pre-heating an apparatus (2,56) for forming the prosthetic device, the apparatus including a support plate made from a thermally conductive material and having a first opening formed through the thickness thereof, the first opening having a predetermined shape, an ironing plate made from a thermally conductive material and having a second opening formed through the thickness thereof, the second opening having a predetermined shape which is as least one of the same as and similar to the predetermined shape of the first opening formed in the support plate, and a core plate made from a thermally conductive material and having a lower surface and a core extending outwardly from the lower surface thereof, the core having a predetermined male form, the core being at least partially receivable by and extending through the second opening of the ironing plate and the first opening of the support plate; placing a mesh material on top of the support plate; placing the ironing plate onto the mesh material so that the mesh material is sandwiched between the support plate and the ironing plate; placing the core plate on top of the ironing plate so that the core penetrates through the ironing plate and the support plate and deforms a portion of the mesh material into a contoured shaped portion which is surrounded by excess mesh material; removing the mesh material containing the contoured shaped portion from between the support plate and the ironing plate; and separating the shaped portion from the excess mesh material, the separated shaped portion defining the seamless, anatomically contoured, prosthetic device. pre-heating an apparatus (2,56) for forming the prosthetic device, the apparatus including a support plate made from a thermally conductive material and having a first opening formed through the thickness thereof, the first opening having a predetermined shape, an ironing plate made from a thermally conductive material and having a second opening formed through the thickness thereof, the second opening having a predetermined shape which is as least one of the same as and similar to the predetermined shape of the first opening formed in the support plate, and a core plate made from a thermally conductive material and having a lower surface and a core extending outwardly from the lower surface thereof, the core having a predetermined male form, the core being at least partially receivable by and extending through the second opening of the ironing plate and the first opening of the support plate; placing a mesh material on top of the support plate; placing the ironing plate onto the mesh material so that the mesh material is sandwiched between the support plate and the ironing plate; placing the core plate on top of the ironing plate so that the core penetrates through the ironing plate and the support plate and deforms a portion of the mesh material into a contoured shaped portion which is surrounded by excess mesh material; removing the mesh material containing the contoured shaped portion from between the support plate and the ironing plate; and separating the shaped portion from the excess mesh material, the separated shaped portion defining the seamless, anatomically contoured, prosthetic device.