Let's say I was skeptical when I received this. 
But I was very pleased with how it works and the space that it really does save.
My freezer has never been so organized. 
So easy to use - insert gallon freezer ziplock bag - freeze - take apart - remove bag. Repeat as needed.
I also figured out that I can make reusable ice squares for our coolers. We travel alot and always take a cooler. I made 3 squares of ice and lined the bottom of our cooler.
And it works great!!! Helps keep food/drinks cold and saves money on ice.