Patent ID: 8701217

Claim:
A undergarment comprising an upper portion ( 2 ) looped to encircle the waist of a wearer; a front portion supported by the upper portion ( 2 ) and extending downwards from it; a rear area ( 5 ) supported by the upper portion ( 2 ) and connected to the front portion, the rear area ( 5 ) extending downwards from the upper portion ( 2 ), and delimiting, with the front portion, a first and a second opening ( 6 , 7 ) for the legs of the wearer and comprising at least one portion ( 5 a , 5 b , 5 c ) made of elastic fabric, the undergarment also comprising a lower connecting portion ( 8 a ) between the front portion ( 4 ) and the rear area ( 5 ), the lower portion ( 8 a ) forming the crotch ( 8 ) of the undergarment, said undergarment being characterised in that it comprises a system ( 9 ) for confining the elastic stretching of the portion ( 5 a , 5 b , 5 c ) made of elastic fabric, the confining system ( 9 ) comprising at least one first sector ( 14 ) in the rear area ( 5 ) where stretching is reduced compared with the portion ( 5 a , 5 b , 5 c ) made of elastic fabric, wherein the confining system ( 9 ) comprises at least a first seam ( 10 ) extending between the crotch ( 8 ) and a node ( 11 ) located at a predetermined height “h 1 ” from the lower edge ( 3 a ) of the elastic element ( 3 ) and at a middle section (S) of the rear area ( 5 ), and wherein the confining system ( 9 ) comprises a second and a third segment or seam ( 12 , 13 ) extending from the node ( 11 ) towards the upper portion ( 2 ) for delimiting the first sector ( 14 ).