These are divider cups for bento boxes that can be washed and reused over and over again. The set comes in two sizes and two colors, large and small, so you can use them according to the color and volume of your side dishes. They can be used in the microwave, oven, refrigerator, and freezer, so you can use them when cooking or to store prepared food, making your busy mornings more efficient. Due to a change in packaging, the product name will change from "Silicone Divider Cup" to "Reusable Divider Cup for Cooking As Is." The product is the same.