The basics Hang Check is a pair of plastic covers that snap on over the rack, keeping  everything aligned and orderly, just the way you like it.  The benefits This amazing invention easily snaps into place securing hangers to the hangrod. When not in use, it conveniently stores on the side bar. The uses In addtion to locking down the rack during transport, it's great for securing clothes when fan drying. Also snaps over and holds rack covers in place. The bottom line Hang Check keeps hangers locked in place when transporting the rolling rack to a different set or location. Hang Check Blue fits all collapsible racks, and Hang Check Orange fits all industrial racks.