Shoe, and method for producing shoe

A shoe comprising:

• an upper that comprises a first layer made of a first knitted fabric and a second layer made of a second knitted fabric arranged inside the first layer,
• wherein at least one of
• the first layer comprises first yarns and second yarns which form the first knitted fabric, and
• the second layer comprises the first yarns and the second yarns which form the second knitted fabric,
• wherein
• the first yarns and the second yarns have a heat shrinkability,
• the second yarns have a higher fusion point than that of the first yarns,
• the at least one of the first layer and the second layer comprising the first yarns and the second yarns has a higher heat shrinkage rate in a width direction than in a longitudinal direction, and
• the first yarns have a heat shrinkability greater than the second yarns.