Mattress Holder in Place:The mattress retainer bar keep mattress from sliding, it is designed with an L-Bend shape can be firmly fixed to the bed frame to prevent your mattress from sliding. Say goodbye to annoying mattress sliding and enjoy a peaceful night's sleep with the bed slide stopper Adjustable Design:The width of the anti-slip baffle can be adjusted,wide adaptation range. Adjustable Max-width is 1.6 inch ,which fits most . Can be used for your home, vacation home, RV and other bed frame of various sizes. If the wooden frame, you can buy self-tapping screws to tighten Robust and Stronger: The non slip mattress gaskets are made of thickened and high quality Material,with black painting,resistant to rust. The thickness of 0.12 inch not deform,and it is so robust to withstand very strong pressure from mattress or box spring Avoid Scratching Mattress and Box Spring: Add a piece of metal strip to lock firmly on the bed frame,while protecting your bed frame from being scratched.