I got these to use on my bed, to keep te sheets from popping off every night during the night. Every single night, at some point in the night one corner of the sheets would pop off and make te bed uncomfortable. I know it is because my bed is thick my usband and I are both restless sleepers, so we decided to try these.
I put them on the day they arrived and fell in love with them the morning after. I have had 3 nights of flat sheet glory! They were easy to put on. I just held up each corner one at a time and clipped the metal clasps to te sheets from the top to the side at te top and from the bottom to the side at the bottom. Not one corner has popped off since. They are made of stainless steel and have a strong teeth clamp that as a flat edge, Tis makes them strong, without damaging whatever they are claped down on.
They could be used for all sorts of things, but mine are staying on my bed.
I would buy these again.