I purchased this from QVC before. Microwave, freezer, and boiling water safe! Also great for storing things. Reusable and very eco-friendly(^^) I kept it new for about a month, but I used it a few days ago to organize small items in the refrigerator. I used it for about a month. I didn't put food directly in it. After taking it out of the refrigerator, I put baking soda in it and sterilized it by boiling. It may have changed color slightly due to being in the refrigerator and boiled. For those who don't mind! Since it's made of silicone, small pieces of dust tend to stick to it. Please wash it thoroughly before use(^^) There are no cases or instructions. Please refrain from purchasing if you are looking for a perfect product... Only those who understand that it is a used item, please purchase(^^) Also, when shipping, I will stack them as shown in the last image and put them together in a box, so please understand m(__)m Cup M Gray Dish S Frost Dish L Teal Dish L Lavender This is a set of 4!