Product review (1 stars): Started leaking after 2nd use.  Makes a mess of freezer. Not stackable.  Hard to get ice out.
If you try to remove the ice cubes while they are fully frozen the cubes often break, but worse, it damages the silicone bottom.  In order to remove without causing a leak, you must let these thaw out for about 2 minutes on the countertop.  This makes for an inherently inefficient method of making ice.

Most annoying feature: The only way to tell which cube locations are developing leaks is to look for the pool of ice that leaks out onto your freezer floor and trace to the cube which has an abnormally low ice level.  I developed a workaround to prevent this mess on subsequent batches (since it is almost impossibel to prevent getting water in the leaking loactions even if you mark them with a marker):  I used a razor knife and cut the silicone bottom out of the leaking spots to prevent any attempts to make ice in those spots.

I was also hoping that there would be more than one tray.  Maybe that was my mistake.  Very expensive in comparison to other options.

Not worth going through the return process.  Not even sure they have one.

Maybe this would work better for something other than ice (chocolate, jello or jelly candies etc...), but I purchased it as an ice cube tray.