Extra Mattress Rail Stopper: This unit combines a mattress sliding stopper with a headboard. It prevents the mattress from sliding off the bed and creates extra storage space near your nightstand for essentials. Material: The mattress frames are made from thick, durable material that resists deformation and rust. Suitable for use with any mattress. Avoid Unnecessary Trouble: A metal plate locks the bed frame while protecting it from scratches. Universal Design: The mattress mounting bar is adjustable in both width and height. You can set it to the height that fits most bed frames for a secure, custom fit. Use scenarios: Small bedrooms or studio apartments: Use the rail stopper to keep the mattress in place while leveraging the added storage space for bedside essentials. Shared beds or kids' rooms: Prevent mattress shift during sleep and protect the bed frame from scratches. Guest rooms or multiframe setups: Easily adapt to different bed frames thanks to the adjustable width and height, providing a stable and compatible solution.