Manufacturing process of a padded upper for winter shoes, comprising the following operating steps: a) provision of a vamp of the upper, wherein said vamp comprises a front edge, two longitudinal borders (11a, 11b) and one back transverse border with two lateral ends provided with symmetrical profiles (12a', 12b'); said vamp comprising a central tongue in intermediate position between the two symmetrical profiles (12a', 12b'); b) laying of an internal covering layer of thermal-insulation material on the inside of said vamp, which comprises a front border, two longitudinal borders (21a, 21b) and one back transverse border with two lateral ends provided with symmetrical rounded profiles (22a, 22b); wherein said covering layer of said vamp is provided with a central tongue in intermediate position between said two symmetrical rounded profiles (22b, 22b), said central tongue being substantially identical to the central tongue of the vamp; wherein said covering layer is joined to said vamp by means of a seam line obtained in the two central tongues (14, 24) after overlapping said two central tongues (14, 24); c) provision of a back portion of the upper, wherein said back portion is formed of two symmetrical quarters joined in a central counter and frontally ending with symmetrical front ends; d) laying of a covering layer of thermal-insulation fabric on the inside of said back portion of the upper, said covering layer being frontally provided with two symmetrical front ends; wherein said covering layer is joined to said back portion by means of only one horizontal seam line made in the central counter of said back portion; e) joining of the symmetrical profiles (12a', 12b') of the two lateral ends of the back transverse border of the vamp in said front ends of the back portion of the upper by means of seam lines; f) joining of the symmetrical rounded profiles (22a, 22b) of the two lateral ends of the back transverse border of the internal covering layer of the vamp at the front ends of the covering layer of the back portion by means of seam lines. a) provision of a vamp of the upper, wherein said vamp comprises a front edge, two longitudinal borders (11a, 11b) and one back transverse border with two lateral ends provided with symmetrical profiles (12a', 12b'); said vamp comprising a central tongue in intermediate position between the two symmetrical profiles (12a', 12b'); b) laying of an internal covering layer of thermal-insulation material on the inside of said vamp, which comprises a front border, two longitudinal borders (21a, 21b) and one back transverse border with two lateral ends provided with symmetrical rounded profiles (22a, 22b); wherein said covering layer of said vamp is provided with a central tongue in intermediate position between said two symmetrical rounded profiles (22b, 22b), said central tongue being substantially identical to the central tongue of the vamp; wherein said covering layer is joined to said vamp by means of a seam line obtained in the two central tongues (14, 24) after overlapping said two central tongues (14, 24); c) provision of a back portion of the upper, wherein said back portion is formed of two symmetrical quarters joined in a central counter and frontally ending with symmetrical front ends; d) laying of a covering layer of thermal-insulation fabric on the inside of said back portion of the upper, said covering layer being frontally provided with two symmetrical front ends; wherein said covering layer is joined to said back portion by means of only one horizontal seam line made in the central counter of said back portion; e) joining of the symmetrical profiles (12a', 12b') of the two lateral ends of the back transverse border of the vamp in said front ends of the back portion of the upper by means of seam lines; f) joining of the symmetrical rounded profiles (22a, 22b) of the two lateral ends of the back transverse border of the internal covering layer of the vamp at the front ends of the covering layer of the back portion by means of seam lines.