Have been using for a few months now. I ordered 2 different lengths. I lost a set of these and don't know where. I'm pretty sure I forgot to take them out of my shirt before it went in the wash. When the magnets are held, the intent of these works great. My collars look fantastic. However, I lost the original magnets that came with the kit. All in all I think this is a great idea. The loss of the stay is my own fault. Losing magnets sometimes seems to happen no matter what.