Vehicle seat

A vehicle seat comprising:

• a seating portion that includes a bottom plate;
• wherein the bottom plate comprises:
• reinforcement ribs that project from a surface of the bottom plate;
• a reinforcement protrusion portion that projects from a bottom surface side of the bottom plate toward a top surface side of the bottom plate;
• and
• a recessed region that is arranged adjacent to the reinforcement protrusion portion and is recessed from the top surface side of the bottom plate toward the bottom surface side of the bottom plate;
• wherein:
• the reinforcement ribs comprise upper ribs arranged on a top surface of the bottom plate and lower ribs arranged on a bottom surface of the bottom plate,
• the recessed region comprises a plurality of first concave portions, each of the plurality of first concave portions having a substantially hexagonal shape partitioned by the upper libs, and the plurality of first concave portions forming a honeycomb shape, and
• the reinforcement protrusion portion comprises a plurality of second concave portions that are recessed from the bottom surface side of the bottom plate toward the top surface side of the bottom plate, each of the plurality of second concave portions having a substantially hexagonal shape partitioned by the lower libs, and the plurality of second concave portions forming a honeycomb shape.