Driver's seat heater and automobile driver's seat

A driver's seat heater installed at a seat cushion of an automobile driver's seat,

• wherein the automobile driver's seat comprises a main section configured to support buttocks and thighs of an occupant, and left and right side bolster sections that are provided at seat left-right direction both sides of the main section and that jut out in a seat upward direction further than the main section,
• the driver's seat heater further comprising:
• a heater main body comprising a main heater and a side beater;
• and
• a sheet shaped base member configured to support the heater main body,
• wherein the main heater is installed at the main section,
• wherein the side heater is installed only at the right-side bolster section positioned on a right side of the automobile driver's seat,
• wherein the automobile driver's seat does not comprise any heater at the left-side bolster section positioned on a left side of the automobile driver's seat.