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Question: are these made of silicone (that would make them soft and flexible and rubber at room temperature) or are they hard plastic (like reg. ice trays)?
Document: The cubes are really cute! You can freeze some then put them in a zipper freezer bag and make some more to build you supply. I didn't give 5 stars only because I think It would break it if I twisted the tray too hard. It's not a real flexible plastic that the tray is made of, so I ran some water over the back of it and then gently twisted it to get them out.
Paying to return them was not an option.I put them in the plastic recycling bin. I did get  what I was looking for eventually. I found some that were made of some kind of rubber like material that were thin and flexible. The cubes popped right out. The company that sent tme did a good job on timeliness and delivery.
I purchased a set of these to keep one tray at work and one at home. When I first purchased these I had difficulty getting the ice out of the tray. I read another review that said to let the tray sit for 60-90 seconds so I did. It does make things a little easier, but not by much. I still like the product, but I think I will be investing in some silicone trays as the plastic of this tray is too hard.
These are great little trays. Perfect for a glass and a soft drink. Best to let them sit out a couple of minutes before twisting to release, as the plastic is hard and would probably slpit over time if not taken care of.
The trays are small and made of hard plastic so you can't remove the ice once its made. Even after banging it on the counter I couldn't get the ice out. It looks cute in the pictures but I would NOT recommend this item to anyone.Very unhappy that I wasted my money
Instead of a handful of cute little ice cubes, you get a mess of scattered ice all over your counter. They're fine for how rarely I use them, but I would not recommend these plastic trays- I'd try a silicone set next.
These plastic ice cube trays work great and are reasonable priced. Make small cube / crushed ice. Better than the more expensive silicone ones.
Fortunately, filling the cubes all the way to the walls didn't make it hard to remove the cubes, as my experience has shown it does with a standard sized tray.The water froze quickly, but I did find that the trays, when stacked one upon the other, tended to stick to each other slightly. I was afraid when I twisted the trays, that the ice would shred into tiny, unrecognizable pieces nothing like the perfect squares they came from.
I thought these would work for me, but they are still too hard to get out, even though I left them on the counter for 90 seconds. Also, having to leave them out of the freezer makes them melt a little and they tend to clump together when stored in an ice container.I have bought the blue ones that make the cubes look like little gumdrops. Love those! They are sturdier trays than the little white squares, and much easier to eject.
I have not broke either of them in the number of weeks I've had them and I am pretty much anything but gentle with them. More importantly, they are not silicone.Would I recommend this product? I suppose, but not as a general thing. I would never slip these trays into casual conversation and mention how great they are. They are of a fine quality if this is what you're looking for, but I would not suggest anyone change plans to make these a part of their lives.
Answer: They are made of plastic.  I remove them from freezer and let them set on the counter for a minute or two and then twist slightly and they seem to work fine.  I use them approximately three times a week or sometimes more.  My husband is on dialysis and they are the perfect size for him to take in his small cooler to have ice to hold in his mouth to satisfy thirst.