To solve the problem that a pain is felt when wearing footwear and walking due to a swelling such as a callus, a corn, or a cut made on the sole.

An attachable and detachable unit 2 is provided at a sole contact face member 1. Thus, an affected part 6a is not pressured and a user hardly feels pain and can comfortably stands up or walk to have a smooth daily life. Furthermore, a pain during treatment is eased, complete recovery is supported and recrudescence is prevented. In addition, when the swelling or the cut are recovered, the unit 2 can be returned to its original position and used like a normal footwear and insole. Even when the position of the swelling or the cut is varied, the unit 2 at a former place is returned to the sole contact face member 1, and an attachable and detachable unit 2' at another place is removed according to a new affected part 6a. Thus, this footwear and insole can be used again and used repeatedly.