I bought these trays in Dec 2012 and I use them daily. I wasn't sure if they would last for very long, but they are exactly the same as the day I bought them, no deterioration. They are floppy to carry from the sink to the freezer, but I have fixed that problem with using a small cutting board (125mm x 190mm). After putting the first tray in the freezer, use the cutting board to load the second tray and leave on top of the first tray so that they are stacked with less floor space needed in the freezer. Overall, I am very delighted with them and fully recommend them to anyone.