A closure clip for closing tubular or bag-shaped packaging for bulk produce such as fruit or vegetables, comprising: two arms forming a first and a second arm (20, 30) extending substantially in a plane and aligned at least approximately parallel to each other, said arms having first and second ends (22, 32; 24, 34); and a base portion extending in the centre plane defined by the arms (20, 30) and having an inner and an outer surface (46, 48), said base portion connecting the first and second arms (20, 30) at their first ends (22, 32) and forming an approximately U-shaped closure clip; characterised by a first spike having a first end and a second end, extending from the inner surface of the base portion between the arms (20, 30) and parallel thereto, and connected with its first end to the base portion, wherein the length of the first spike is at least equal to a dimension of the cross-section of at least one of the arms (20, 30); and wherein the first spike has such a length that it extends with its second end into a gap between the arms (20, 30) when the closure clip is in its closed configuration, in which it is bent around to tubular or bag-shaped packaging to be closed and in which the arms (20, 30) lie approximately parallel to each other at least in sections, wherein the second end of the first arm faces towards the first end of the second arm and the second end of the second arm faces towards the first end of the first arm; further comprising at least one second spike having a first and second ends (62; 64), which extends from the inner surface of the base portion between one of the arms (20; 30) and the first spike and parallel thereto and is connected with its first end to the base portion, wherein the length of the second spike is shorter than the length of the first spike. two arms forming a first and a second arm (20, 30) extending substantially in a plane and aligned at least approximately parallel to each other, said arms having first and second ends (22, 32; 24, 34); and a base portion extending in the centre plane defined by the arms (20, 30) and having an inner and an outer surface (46, 48), said base portion connecting the first and second arms (20, 30) at their first ends (22, 32) and forming an approximately U-shaped closure clip; characterised by a first spike having a first end and a second end, extending from the inner surface of the base portion between the arms (20, 30) and parallel thereto, and connected with its first end to the base portion, wherein the length of the first spike is at least equal to a dimension of the cross-section of at least one of the arms (20, 30); and wherein the first spike has such a length that it extends with its second end into a gap between the arms (20, 30) when the closure clip is in its closed configuration, in which it is bent around to tubular or bag-shaped packaging to be closed and in which the arms (20, 30) lie approximately parallel to each other at least in sections, wherein the second end of the first arm faces towards the first end of the second arm and the second end of the second arm faces towards the first end of the first arm; further comprising at least one second spike having a first and second ends (62; 64), which extends from the inner surface of the base portion between one of the arms (20; 30) and the first spike and parallel thereto and is connected with its first end to the base portion, wherein the length of the second spike is shorter than the length of the first spike.