PURPOSE: To make circumstances always comfortable by removing both perspiration and odor without weight sensation, by a method wherein a bag body is formed by two sheets being joined, which are one sheet without permeability and the other sheet with the permeability, and warm or cool air is supplied into the bag body from an air-supplying device.

CONSTITUTION: The title article is formed into a bag body 3 by two sheets being joined, which are one sheet 1 without permeability and the other sheet 2 with the permeability, and air is supplied through a supply port 4 provided on the joint part of the bag body 3, by an air-supplying device 5. When warm or cool air is supplied into the bag body 3, it not only expands the bag to some degree, but also blows from the sheet 2 with the permeability. The warm or cool air, therefore, keeps a human body in a temperature and makes circumstances comfortable, by removing perspiration caused during a sleep. For the buoyancy of the warm or cool air, the weight of the bag body 3 is not felt at all. The air-supplying device 5 is composed of a fan 7, a heating or cooling appliance 8 and a controller 9. Its device contains a battery 10 and can charged into the battery 10 from a commercial power source, or can directly supply electric power to the controller 9.