A shoe, comprising: an upper material that is partially or fully formed of a fiber sheet, wherein the fiber sheet is a woven fabric composed of a plurality of yarns or a knitted fabric composed of a plurality of yarns, the plurality of yarns comprising fusible yarns, elastic yarns, and shrinkable yarns, in the fiber sheet, the fusible yarns are arranged along a circumferential direction about the shoe center axis and the yarns are fused with one another by the fusible yarns, and the fiber sheet has a heat shrinkability, and exhibits the heat shrinkability that is higher in a direction orthogonal to the shoe center axis than in a direction along the shoe center axis, and wherein the fiber sheet exhibits both tensile characteristics (A) and (B) below at least in one direction: (A) tensile characteristics such that an energy loss of a 10-mm-wide strip-shaped test piece made of the fiber sheet, when a load with a tensile energy of 50 mJ is applied to the test piece in the length direction and is then removed, is 40 % or less; and (B) tensile strength such that a permanent strain of a 10-mm-wide strip-shaped test piece made of the fiber sheet, after a million times of deformation and restoration with an amount of strain determined by pulling the test piece in the length direction to a tensile energy of 50 mJ, is 10 % or less. an upper material that is partially or fully formed of a fiber sheet, wherein the fiber sheet is a woven fabric composed of a plurality of yarns or a knitted fabric composed of a plurality of yarns, the plurality of yarns comprising fusible yarns, elastic yarns, and shrinkable yarns, in the fiber sheet, the fusible yarns are arranged along a circumferential direction about the shoe center axis and the yarns are fused with one another by the fusible yarns, and the fiber sheet has a heat shrinkability, and exhibits the heat shrinkability that is higher in a direction orthogonal to the shoe center axis than in a direction along the shoe center axis, and wherein the fiber sheet exhibits both tensile characteristics (A) and (B) below at least in one direction: (A) tensile characteristics such that an energy loss of a 10-mm-wide strip-shaped test piece made of the fiber sheet, when a load with a tensile energy of 50 mJ is applied to the test piece in the length direction and is then removed, is 40 % or less; and (B) tensile strength such that a permanent strain of a 10-mm-wide strip-shaped test piece made of the fiber sheet, after a million times of deformation and restoration with an amount of strain determined by pulling the test piece in the length direction to a tensile energy of 50 mJ, is 10 % or less. (A) tensile characteristics such that an energy loss of a 10-mm-wide strip-shaped test piece made of the fiber sheet, when a load with a tensile energy of 50 mJ is applied to the test piece in the length direction and is then removed, is 40 % or less; and (B) tensile strength such that a permanent strain of a 10-mm-wide strip-shaped test piece made of the fiber sheet, after a million times of deformation and restoration with an amount of strain determined by pulling the test piece in the length direction to a tensile energy of 50 mJ, is 10 % or less. <EOS>