Thank you for viewing. This is a divider for lunch boxes from HAKOYA (Hakoya Tatsumiya), a specialty store for lunch boxes. It just arrived last week, but the size didn't fit my existing lunch box, so I'm selling it as a set of two. It's designed for bentwood lunch boxes, but can also be used for regular lunch boxes, food storage containers, etc. Made in Japan for peace of mind ◯ The actual color is white. Images 9-10 are reference images of a different color. Product Name: Divider Size: For bentwood single-tier lunch box small, approximately 40mm high x 100mm bottom Main Material: Polypropylene Heat Resistance: +140℃ Manufacturer: HAKOYA (Tatsumiya Co., Ltd.) Made in Japan Microwave-safe Dishwasher-safe Parts Safe and secure Divider Liner Food separator Eco-friendly Simple MUJI (Muji)