I purchased this in April 2024, but I haven't used it, so I'm selling it. It's two boxes of 2 pieces each. Please purchase the set of 2 boxes. [Features of the Mother's Milk Realization Parts Lid] Can be attached to a baby bottle and used as a container for food or small items. The simple structure with an integrated packing makes it easy to wash. [How to Use] Remove the hood, cap, and nipple from the Mother's Milk Realization baby bottle. Attach the lid and use it as a container for food or small items.