Review on Korlon 4 Pack Adjustable Heavy Duty Bed Sheet Clips: Secure Fitted Sheet Fasteners in Black by Kevin Compton

They work better than I expected. I recently bought a 1" thick mattress topper. The extra height caused my sheets to keep unraveling at the corners and along the edges. I was hoping this would help prevent this, but I wasn't expecting great results. To my surprise, they did a pretty good job. I no longer have to fix my sheets every morning. A few times I dropped the clip and had to reattach it, but nothing much happened. I can't find any damage to the sheet metal itself either. For $7 or $8 you can win a lot and lose a little (and if they don't suit you, you can just give them back). TO UPDATE. I've had these for a while. I'm taking off a star because they come up too often. In other words, the "hand" of the blade is not as strong as it should be. I've found that I have to reattach frequently.