Japan Post will gradually switch to new designs and sizes of boxes for its "Yu-Pack" service, which are sold at post offices nationwide, starting from October 1st.
The main changes include a redesign that prominently displays Japan Post Group's new action mark, and the display of the FSC certification mark, which signifies contributions to forest conservation.
The box sizes have also been revised to match each category; for example, the extra-large "120 size" will change from 345mm (length) x 445mm (width) x 340mm (height) to 350mm (length) x 505mm (width) x 345mm (height).
The old design boxes will continue to be sold as long as stock is available. However, some post offices may not carry these boxes.

