Abstract: Functional underpants comprise a penis support member having a double structure comprising an outer cloth and an inner cloth, a scrotum support member having a single structure and being formed vertically under and connected to the penis support member, and a rear member connected to a lower end of the scrotum support member having the single structure. The outer cloth of the penis support member includes a first bending section, a second bending section having a horizontal length and formed under the first bending section, and a first curved portion formed between the first and second bending sections, which create a penis pocket along with the inner cloth of the penis support member. The scrotum support member includes the second bending section, a third bending section, and a second curved portion formed between the second and third bending sections, which form a scrotum pocket.

Abstract: Disclosed are functional underpants for men for securing air permeability and improving sexual health, the functional underpants comprising: a penis support member (120) including a functional member and means of the functional member and having a double structure comprising an outer cloth (101) and an inner cloth (102); a scrotum support member (130) having a single structure and being inserted between the outer cloth (101) and the inner cloth (102) of the penis support member (120) having the double structure by sewing; and a rear member (140) connected to a lower end of the scrotum support member (130) having the single structure and to the left and right sides of the outer cloth (101) of the front portion of the underpants by means of sewing, characterized in that a penis pocket (260) and a scrotum pocket (270) are generated, respectively, due to application of tension and contractile force to the penis support member (120) and the scrotum support member (130) while a wearer wears the functional underpant