This is a family-sized "Picnicet" lunch box from Nishikikasei (錦化成), with a Showa-retro design and excellent ventilation. ⚫︎Size (inner dimensions) Approximately 21 x 21 x 7 cm ⚫︎Material Polypropylene ⚫︎Heat resistance 110 degrees Celsius The following is from the description on the back of the outer box: ⚫︎Uses ・As an essential item for leisure, it accompanies picnics as a container for portable food such as rice balls, sandwiches, and boiled eggs. ・Also, please use it in various ways as a food container to keep away annoying flies in the summer. ・It is also convenient as a storage container for the refrigerator. ・On the way back from a picnic with children, it can also be used as a substitute for an insect cage. ⚫︎Features ・The basket weave allows for good ventilation, preventing the contents from getting soggy. ・Your lunch won't spoil during summer leisure activities. ・Rice balls, etc., won't have soggy seaweed and won't be "sticky." ・This is a very versatile basket. ⚫︎Material Because it is made of polypropylene: ・It can be sterilized with boiling water. ・It is lightweight, durable, and won't rot. ・Dirt on the basket can be easily removed with a soft cloth or sponge and detergent or soapy water. The content is very Showa-era, but it seems to be versatile. As a bonus, 6 picnic plates are also included. The outer box has deteriorated over time, but the main body has not deteriorated much despite being used several times, and it is in good condition without dirt or stickiness. Please consider this item with the understanding that it is used.