COMASACH 6-Pack Non-Slip Bed Frame Gaskets - Anti-Slip Mattress Baffle Pads for 0.47" Wide Pipes/Bars - Prevent Mattress Shifting & Noise Reduction for Better Sleep (Fits Most Bed Frames)

Works as they shouldI have been using for almost a week, they could stand to be a little taller, and perhaps have a means to lock them on the frame. Even mounted under a bedskirt, they have popped out and off a couple of times. Fore the most part, they do work.It is very important to measure your metal bed frame before ordering. We needed something to keep our new mattress from sliding. We put two on both sides and two on the foot of the bed. The only thing I wish they would change is to make the flat side higher, if you have a thick mattress, these would not work.Honestly they were fine for like a month but then the clips would bend Bc the metal is softer and they just kept falling off I ended up having to find something metal to stick through the bottom to keep them from popping off. Y’all should really consider making like a pin that helps secure them on the bed.Great craftsmanship... however, I can't offer a true review. I ordered the wrong size for the structure that I purchased and had to return them. I did get a speedy refund. :)They are sturdy on the bed rail.These items really work as discussed in add. Work every pennySmaller than I expected but did the jobI have purchased several and all of them hold the mattress. I would not hesitate to purchase more.