I thought these would help my slipping sheet corners. First, I had a difficult time getting them on,kept popping apart. After ten minutes of trying to get the first two on, I then gave up with the others. The ones that I had managed to get on to the sheet had come off the next day. For the price, I didn't lose much. If you don't try something, you'll never know. This time though, most of the reviews were correct on the poor quality.
Bottom Line No, I would not recommend this to a friend