This is a can preservation cap from Plaiaden (プレイアーデン). Can Preservation Cap Deep Blue (Cat Relief) Please check the details in the photos. Although it is new, the corners of the plastic container are as shown in the photos. Please refrain from purchasing if you are sensitive to this. It will be shipped in an envelope. Excerpt from the manufacturer's website: ・Product Features This is a can preservation cap from Plaiaden. With a special structure that prevents internal air and moisture from escaping, it keeps the freshness, aroma, and deliciousness of the opened can. It prevents food from drying out and prevents odors from spreading in the refrigerator. ・Product Specifications Material: Styrene-based elastomer Size: Diameter 79mm x H12mm (Dog Relief), Diameter 79mm x H12.5mm (Cat Relief) Weight: Approximately 10g Heat and cold resistance: -30℃ to +100℃ Planning, design, and manufacturing: Japan Manufacturer's price: 880 yen (tax included) / 1 piece Price reduction not possible. Instant purchase OK.