SEAT PAD AND SEAT PAD MANUFACTURING METHOD

A seat pad () includes a surface portion () configured of a polyurethane foam (). In the surface portion (), wiring grooves () for wiring a wire harness () are formed. Each wiring groove () has a groove width W narrower than the diameter (φ ) of the harness (), and a groove depth (D) deeper than the diameter φ of the harness (). A seat pad manufacturing method uses, as a molding die, a molding die that has groove-forming protrusions to form the wiring grooves () and has holes formed in side surfaces of the groove-forming protrusions. A polyurethane foam material is supplied to an interior of the molding die, and when a molded product is removed from the molding die, molded portions formed in the holes are forcibly pulled out of the holes of the groove-forming protrusions.