Extra Mattress Rail Stopper A combination of mattress sliding stopper and headboard that prevents the mattress from sliding off and creates extra storage space for your nightstand material: The mattress frame is made from thick, durable material that is not easily deformed or rusts. Suitable for any mattress Avoid unnecessary trouble: Includes a metal plate to lock the bed frame while protecting it from scratches. The plate can be moved whenever you need Universal design: The mattress mounting bar is adjustable in both width and height, so you can set it to a suitable height for most bed frames Use scenarios Small or shared bedrooms: Use the extra storage area alongside the bed for essential items and keep the sleeping area stable by preventing mattress movement Beds without a sturdy headboard or with varying frame sizes: The rail stopper provides a reliable barrier and acts as a back support, while fitting different frame styles Rentals or adjustable setups: When upgrading or changing bed frames, simply adjust the width and height to maintain a secure fit