Seat and seat back for multi-passenger vehicle

A seat for a multi-passenger vehicle comprising:

• a seat cushion mounted on a frame of the seat,
• a back cushion mounted to the frame,
• a seat back mounted on an opposite side of the frame, the back cushion and the seat back extending transversely away from the seat cushion, the seat back comprising:
• a head impact portion;
• a leg impact portion;
• wherein the leg impact portion comprises expanded polyethylene (EPE) foam having a second density between 1.0 and 1.6 pcf;
• and
• wherein the head impact portion comprises polyurethane foam having a first density between 3.1 and 3.7 pcf and an indentation force deflection (IFD) of between 67 and 83 pounds at 25% compression.

A method of manufacture of a seat for a multi-passenger vehicle, the method comprising the steps of:

• attaching a seat back to a seat frame;
• wherein the seat back comprises:
• a head impact portion;
• a leg impact portion;
• wherein the head impact portion comprises polyurethane foam having a first density between 3.1 and 3.7 pounds in a cubic foot (pcf) and an indentation force deflection (IFD) of between 67 and 83 pounds at 25% compression.