The present invention provides footwear capable of alleviating the effects of sweating feet. The footwear A includes: an outsole 1 including a chamber 1a having a recessed portion at
a site to be located under a
heel; an elastic member 4 for closing an upper surface of the chamber 1a having the recessed portion into an air-tight state, and including an expanded portion 4a expanding upward; an insole 2 having a covering portion 2a which is a recessed portion for covering the expanded portion of the elastic member 4, and having an opening 2b on its upper surface; an outside-air intake opening 1b provided on a side wall of the outsole 1; an outside-air passage 1c provided to the outsole 1 and establishing communication between the outside-air intake opening 1b and the chamber 1a; a first
check valve G1 for incorporating outside air, provided inside the outside-air passage 1c to allow the air to flow toward the chamber la and to enter therein, whereas to block the flow of the air from the chamber 1a to the side of outside air; a
discharge passage P for establishing communication between the chamber 1a and the opening 2b; and a second
check valve G2 for exhausting the air, provided inside the
discharge passage P to allow the air to flow out of the chamber 1a, whereas to block the flow of the air into the chamber 1a.