The listing clearly states the sizes so no one should be surprised they are small unless they slept thru math class. Smallest is one cup biggest is 4 cups. These have lids and are described as ” storage saver” bowls. I got them to discard all toxic plastics I used before and are less heavy then my glass and ceramic storage savers. They are light, easy to clean and store. They fit dressings, leftovers and salads beautifully. Freezer safe so I saved meatloaf ingredients and just had to defrost and bake while I made pasta and the veggies I prepped and stored in the smaller container. Lids fit great. I’m very happy with them. I do not agree with other reviews. These are a bargain and very useful. Size is as described 8oz, 12oz, 16oz, 18oz, 32oz. They are not heavy gauge with silicone lids but, they are half. to 1/4 the price of those. There are bigger mixing bowls listed if you want that. These are great for singles and for storage of smaller items. I ordered a second set! [...]