Covid-19 has led to an explosive surge in online shopping. This has caused a serious problem for the Japanese courier industry. It is a unique rule in Japan called "saihaitatsu," which means that courier companies have to deliver packages multiple times before they are handed over in person, creating a huge burden.

According to calculations by Japan's Ministry of Land, Infrastructure, Transport and Tourism, there will be 340,000 redeliveries in 2019. That's a total of 180,000,000 wasted working hours.

Our focus was on Japanese mailboxes. According to the rules, they always have a frontage of 3cm. So if everything you can buy on the Internet were 3cm thick, it would go straight into the mailbox and they wouldn't have to deliver it again and again.

We produce and sell 3cm rice, coffee, lights, and cameras. We called for the spread of this concept throughout Japan.

Our focus was on Japanese mailboxes. According to the rules, they always have a frontage of 3cm. So if everything you can buy on the Internet were 3cm thick, it would go straight into the mailbox and they wouldn't have to deliver it again and again.

We produce and sell 3cm rice, coffee, lights, and cameras. We called for the spread of this concept throughout Japan.

Many stores agreed to this project and started

We produced and sold 3cm rice, coffee, lights, and cameras.

By showing the products themselves, we accelerated the spread of this project. We also developed outdoor advertisements to promote the concept throughout Japan.

We also developed outdoor advertisements. We also distributed this logo to many stores to support this project, and increased the production and delivery of the products by 3cm.

As a result, the number of post-deliverable products in Japan increased by 50% compared to 2019. Furthermore, the number of re-delivered packages was reduced by 79,000. This translates into 112,000 hours of labor. This package design led to the solution of various problems in the delivery industry in Japan.