Instruct: Classify Amazon reviews into positive or negative sentiment
Query: The trays crack very easily.

I completely agree with Jon Tulloch. Unless you're buying these cases for the top and bottom pieces, you should look elsewhere. The very first tray I tried to remove from the bottom piece, cracked at the corner! Now, I've done this dozens (if not hundreds) of times; not one tray had ever cracked. The material used in these cases appears to be lighter and thinner than standard, resulting in a flimsy case. Of course, just because this product has the same name as the product another customer has purchased, it doesn't mean they are the same product. It's entirely possible that this product was made more sturdily in the past, and it's been cheapened to save money (like so many other products). This could explain the different experiences reported by different customers.