My fitted sheets fit snugly on my bed and this tool poked holes in the sheet. Ripped my sheets and was hard to use.

The fasteners seem cheap and shoddy. Half of them broke as soon as i tried to install them on a sheet. Not much faith in their own product.

Never could figure out an easy way to fasten these on my fitted sheets. Even with the straps fully extended, this just are nearly impossible to fit my mattress. Very hard to attach when sheets are pulled tight enough.