A container comprising a wall having an outer side, an inner side, a closed base at one end and a generally curved rim at an opposite end, the rim defining a top opening of the container, the container further comprising: a pair of substantially arcuate crease lines (7, 8) formed in the wall of the container at opposite sides of the wall below the rim; wherein each crease line has first and second ends (7a, 7b, 8a, 8b) coinciding with the rim; wherein each crease line and the portion of the rim between the first and second ends of the crease line define a flap (70, 80) having an outer face and an inner face; wherein each crease line is configured to act as a hinge allowing each flap to toggle between two positions upon application of an initial external force on the flap, the two positions being an open upright position in which the flap is convex and forms part of the wall of the container, and a closed lowered position in which the flap changes its shape to concave; wherein the container further comprises a closure arrangement operable to restrict at least one flap opening (100a, 100b) defined at or adjacent to positions where the ends of each crease line coincide with the rim of the container when the flaps are in the closed lowered position, wherein the closure arrangement comprises at least one closure leaf on the inner side of the container wall; characterised in that the closure leaf is attached to a first one of the flaps at a location spaced from the position where the ends of the crease lines coincide with the rim at the flap opening being restricted and wherein the closure leaf is movable with the first flap; and wherein the closure leaf extends underneath said flap opening downwardly spaced from said flap opening when the flaps are in the closed lowered position. a pair of substantially arcuate crease lines (7, 8) formed in the wall of the container at opposite sides of the wall below the rim; wherein each crease line has first and second ends (7a, 7b, 8a, 8b) coinciding with the rim; wherein each crease line and the portion of the rim between the first and second ends of the crease line define a flap (70, 80) having an outer face and an inner face; wherein each crease line is configured to act as a hinge allowing each flap to toggle between two positions upon application of an initial external force on the flap, the two positions being an open upright position in which the flap is convex and forms part of the wall of the container, and a closed lowered position in which the flap changes its shape to concave; wherein the container further comprises a closure arrangement operable to restrict at least one flap opening (100a, 100b) defined at or adjacent to positions where the ends of each crease line coincide with the rim of the container when the flaps are in the closed lowered position, wherein the closure arrangement comprises at least one closure leaf on the inner side of the container wall; characterised in that the closure leaf is attached to a first one of the flaps at a location spaced from the position where the ends of the crease lines coincide with the rim at the flap opening being restricted and wherein the closure leaf is movable with the first flap; and wherein the closure leaf extends underneath said flap opening downwardly spaced from said flap opening when the flaps are in the closed lowered position.