Interchangeable, color-coded top is designed to make recycling easier with consistent color-coding, lid openings and waste stream options. It promotes recycling and improves productivity. This lid is one of the Rubbermaid Slim Jim Single Stream Recycling Tops for Slim Jim Containers (sold separately). Different-colored lids indicate which kind of refuse the attached container will accept. This blue top is slotted with a rounded middle on both sides to encourage mixed-use recycling.