Comfort assembly for a vehicle seat

1) A comfort assembly for a vehicle seat comprising a cushion, the comfort system comprising:

• a carrier comprising a thermal device;
• a spacer layer located below the carrier;
• and
• an effector device located below the spacer layer so that the spacer layer is between the effector device and the carrier;
• one or more attachment devices that attach the carrier to the effector device;
• wherein the effector device is attached to the carrier one or more attachment devices before the comfort assembly is installed onto the cushion of the vehicle seat.