A container for consumer articles, the container comprising: a box portion; a lid portion, wherein the lid portion is moveable relative to the box portion between an open position and a closed position; and an inner frame received within the box portion, wherein the inner frame comprises: an inner frame front wall; first and second inner frame side walls (104, 106) each depending along an inner frame fold line (108, 110) from the inner frame front wall; a first cut line and a second cut line in the first and second inner frame side walls (104, 106), respectively, wherein each of the first and second cut lines (112, 114) intersects a respective inner frame fold line (108, 110) at upper and lower intersection points (116, 118); the first and second cut lines (112, 114) defining a first and a second locking tab (120, 122); each of the first and second locking tab (120, 122) extending outwardly from the inner frame towards a respective side wall of the container and past an edge formed by the inner frame front wall with a respective inner frame side wall (104, 106), and interacting with the lid portion of the container when the lid portion is moved between the open position and the closed position; characterised in that each of the first and second cut lines (112, 124) comprises an undulated portion (124, 126) comprising at least two peaks and a trough, a distance between adjacent peaks of the undulated portion (124, 126) being at least about 0.8 mm. a box portion; a lid portion, wherein the lid portion is moveable relative to the box portion between an open position and a closed position; and an inner frame received within the box portion, wherein the inner frame comprises: an inner frame front wall; first and second inner frame side walls (104, 106) each depending along an inner frame fold line (108, 110) from the inner frame front wall; a first cut line and a second cut line in the first and second inner frame side walls (104, 106), respectively, wherein each of the first and second cut lines (112, 114) intersects a respective inner frame fold line (108, 110) at upper and lower intersection points (116, 118); the first and second cut lines (112, 114) defining a first and a second locking tab (120, 122); each of the first and second locking tab (120, 122) extending outwardly from the inner frame towards a respective side wall of the container and past an edge formed by the inner frame front wall with a respective inner frame side wall (104, 106), and interacting with the lid portion of the container when the lid portion is moved between the open position and the closed position; characterised in that each of the first and second cut lines (112, 124) comprises an undulated portion (124, 126) comprising at least two peaks and a trough, a distance between adjacent peaks of the undulated portion (124, 126) being at least about 0.8 mm. an inner frame front wall; first and second inner frame side walls (104, 106) each depending along an inner frame fold line (108, 110) from the inner frame front wall; a first cut line and a second cut line in the first and second inner frame side walls (104, 106), respectively, wherein each of the first and second cut lines (112, 114) intersects a respective inner frame fold line (108, 110) at upper and lower intersection points (116, 118); the first and second cut lines (112, 114) defining a first and a second locking tab (120, 122); each of the first and second locking tab (120, 122) extending outwardly from the inner frame towards a respective side wall of the container and past an edge formed by the inner frame front wall with a respective inner frame side wall (104, 106), and interacting with the lid portion of the container when the lid portion is moved between the open position and the closed position; characterised in that each of the first and second cut lines (112, 124) comprises an undulated portion (124, 126) comprising at least two peaks and a trough, a distance between adjacent peaks of the undulated portion (124, 126) being at least about 0.8 mm.