Abstract: A head restraint assembly includes a headrest bun including an interior portion and a rear outer surface. A frame member is disposed within the interior portion of the headrest bun. A support block is disposed adjacent to the frame member and includes first and second access slots disposed through a body portion thereof. A bracket includes a body portion operably coupled between the support block and the frame member. The bracket includes first and second fins rearwardly extending from the body portion of the bracket through the first and second access slots of the support block and through the rear outer surface of the headrest bun. The distal ends of the first and second fins are spaced-apart from one another and positioned outside of the interior portion of the headrest bun in assembly, and are configured to contact a glass pane of a vehicle during a deceleration event.