Abstract: Panties of man's for protection of genital area. A scrotum pocket delimitation band is provided around a scrotum pocket formed on the front surface of an underpants body to receive the scrotum, thereby rendering contractibility to the scrotum pocket. The penis and the scrotum are separated from each other by the elasticity of a penis pocket delimitation band. The outer cloth of a penis pocket is formed with cut-away portions so that the upper part of the penis pocket is held close to the human body and the penis can be easily received in the lower part of the penis pocket. A portion of the upper part of the outer cloth of the penis pocket is not stitched to the underpants body, thus being open and thereby promoting ventilation of the inside space of the penis pocket.