The Rubbermaid 1806177 Lunch Blox - Sandwich Container is part of the new Rubbermaid Lunch Blox Series which is designed to make taking lunch to school or work more convenient and organized. The Sandwich container is designed to fit sandwiches made with either regular or rectangular bread and provides a smaller foot print than traditional food storage, which makes it easier to fit inside a lunch bag. The Lunch Blox are space efficient and are designed to work together to save space and stay organized in a lunch bag. The pieces of the lunch blox can be configured to fit any lunch bag and work in conjunction with the lunch blox blue ice to keep your lunch chilled for up to four hours. The lunch blox containers are perfectly sized for common foods taken on the go. All Lunch blox containers are Durable and Leak-Proof, as well as Microwave, Dishwasher and Freezer Safe, BPA Free.