A merchandise display system having a pusher structure slidably-coupled to a track. The pusher structure comprises a lock arm configured to selectively engage with a ratchet rack to allow for selective unidirectional motion of the pusher structure upon application of a manual force to a pusher face of the pusher structure. Further, selective disengagement of the ratchet rack from the lock arm is facilitated by a manually-actuated pull strip having a ramp structure that slidably engages with the lock arm to lift a pawl out of the ratchet rack. This selective disengagement allows for bidirectional sliding of the pusher structure along said track, thereby allowing displayed products to be moved towards a front of a display shelf, or for products to be reloaded into the merchandise display system.