The Ello Stackable Bento Lunch Container is designed to keep food separate and is easy to fit in your work or school bag. This stack consists of a 2 cup container and a 3 cup container with a removable divider, along with a stainless steel fork and knife for convenience. Each container includes a locking lid so you can choose to use them together or separate. The machine-washable strap keeps the two containers together for easy transport, and the utensils fit snugly inside the strap. Do not use the product to cook or boil. Excessive reheating time in the microwave may damage the container. Sterilization and exposure to high temperatures can lead to microplastic release in all plastic food storage.