PURPOSE: To shut off the vibrations to change the condition of a human body and to enhance holdability by forming a seat part and back rest of foamed sheets encapsulated with many small cells over the entire surface of a soft sheet.

CONSTITUTION: This cushion for vehicles is formed of the foamed sheet 3 having the seat part 1 to be laid in the femur, thigh and hip parts and the back rest part 2 to be pressed to the rear of the hip part and the back continuously with this part and has a cover body 4 to cover the surfaces thereof. The foamed sheet 3 is required to be films or sheet 3a, 3b having airtightness and is formed by sealing the many small cells between two sheets of the soft films or sheets 3a, 3b. Since the air is packed into the respective small cells, impact and vibrations are absorbed by the air spring effect of the small cells. As a result, the transmission of the vibrations to cause a change in the condition of the human body, such as lumbago, to the human body is prevented. The large deviation of the films or sheets 3a, 3b. from each other is prevented and, therefore, the holdability is enhanced.