Expandable pocket for extinguishing, storing and disposing cigarette butts

An expandable pocket 100 for extinguishing, storing and disposing cigarette butts 102 is provided. Said pocket 100 is configured to be changeable between an open and a closed state. The expandable pocket 100 comprises: a rectangular panel 120comprising a first 120a, second 120b, third 120c and fourth 120d edge and a first fold line 125, substantially parallel to the fourth edge; an expandable section 140 comprising a rectangular portion 130 with a first 130a, second 130b, third 130c and fourth 130d edge, a folded section 160 connecting the first edge 130a of the rectangular portion with the first edge 120a of the rectangular panel, and connecting the second edge 130b of the rectangular portion with the second edge 120b of the rectangular panel and connecting the third edge 130c of the rectangular portion with the third edge 130c of the rectangular panel such that an interior 110 of the expandable pocket 100 is formed. The expandable pocket 100 further comprises a pocket opening 150 formed by the fourth edge 120d of the rectangular panel, the folded section 140 and the fourth edge 130d of the rectangular portion. The pocket opening 150 provide access to the interior 110 of the expandable pocket 100 when said expandable pocket is in said open state. The expandable pocket 100 further comprises an extended section 121 connected to the rectangular panel 120 along the fourth edge of the rectangular panel 120. The folded section 160 is at least partly unfolded when said expandable pocket is in said open state and folded when said expandable pocket is in said closed state. The rectangular panel 120 is arranged to fold along the first fold line 125 such that at least one of a part of the rectangular panel 120 and the extended section 121 could be removably attached to an outside surface of the rectangular portion to seal the pocket opening 150 when the expandable pocket 100 is in said closed state.