A size-adjustable apparatus for a securing a product in order to prevent theft of that product. The apparatus includes an adjustable housing, the housing having a first arm, a second arm, and a third arm. The first arm is adapted to move in a first direction and a second direction with respect to the third arm and the second arm is adapted to move in a third direction and a fourth direction with respect to the third arm, where the first direction is opposite the second direction and the third direction is opposite the fourth direction. The apparatus also includes a lock to retain the adjustable housing in a desired position. The result is a housing that can dynamically change its dimensions by movement of the first arm in a first and second direction and by movement of the second arm in a third and fourth direction.