PURPOSE: To suppress stuffiness of feet which is a cause of malodor of feet and generated by sweat and body temperature, by providing a ventilating device on a heel part and delivering air to the inner part of a footgear through inserting a breather pipe into a toe part.

CONSTITUTION: A ventilating device peripheral part 1 has an airtight ability and made of a material gives no feeling of hardness when a body weight is added thereto. An elastic porous material 2 has permeability and made of a material having its ability by which a breather pipe 6 is neither completely crushed nor choked up when the body weight is added thereto. The breather pipe 6 is made of a highly elastic raw material such as a silicon tube or the like. In a footgear ventilating insole, valves 9 which prevent air from counter-flowing are provided in an intake ports 7, and in an exhaust ports 8. And when the body weight is added to the heel, the ventilating device part is pushed and narrowed and air is exhausted from the exhaust ports 8, and when the body weight is not added to the heel, air is sucked from the intake ports by means of the restoring force of the highly elastic silicon tube 5 or the like or the highly elastic porous material 5 in the ventilating device. Therefore, the air can be flown in one direction, the air inside of the footgear can be ventilated and the inner part of the footgear is kept at low humidity and thereby the foot stuffiness can be suppressed.