Interior part for vehicle

An interior part for a vehicle, comprising:

• a main body member made of a synthetic resin and having a plurality of recesses and protrusions;
• a first member joined to a top surface of the main body member and made of a synthetic resin formed in a plate-like shape;
• and
• a second member joined to a bottom surface of the main body member and made of a synthetic resin formed in a plate-like shape, wherein
• the main body member, the first member, and the second member are joined together to form a laminate,
• a first peripheral portion of the first member and a second peripheral portion of the second member have curved shapes curved toward each other,
• a first edge of the first peripheral portion and a second edge of the second peripheral portion are welded to each other along a parting line,
• a height position of the parting line in a thickness direction of the laminate is different between a first region and a second region, wherein the first region and the second region are distinct regions each defined in a peripheral direction of the laminate,
• a first curvature radius of the curved shape of the first peripheral portion in the first region and a second curvature radius of the curved shape of the first peripheral portion in the second region are different from each other, and
• a third curvature radius of the curved shape of the second peripheral portion in the first region and a fourth curvature radius of the curved shape of the second peripheral portion in the second region are different from each other.