Security tag

A security tag comprising:

• a main body comprising a casing having opposite first and second end walls, and the casing comprising a first aperture disposed proximate the first end wall and a second aperture disposed proximate the second end wall;
• an elongate flexible member for securing around an object, a first end of the flexible member extending through the first aperture and being connected to the main body;
• a releasable locking mechanism in the main body and associated with the second aperture, the locking mechanism configured to retain a second end of the flexible member within the casing such that a part of the flexible member external to the casing forms a loop, the locking mechanism being releasable by application of a magnetic force such that the second end of the flexible member can be withdrawn from the casing;
• and
• two electronic article surveillance (EAS) sensors housed within the casing, a first one of the sensors being proximate the first end wall of the casing and a second one of the sensors being proximate the second end wall of the casing, such that the first and second sensors are on opposite sides of a plane that is between the first and second end walls and that is disposed halfway between the first and second apertures, and such that when the second end of the flexible member is retained in the casing by the locking mechanism, a centre of gravity of the main body lies in the plane disposed halfway between the first and second apertures.