☆ For an additional ¥30, you can upgrade to A4 size with a thickness of 3 cm (white on one side). Please let me know before purchasing. Yamato Nekopos compatible - Assembly box 《Set of 8, 4 sheets each》 ○ A4 Assembly Size: (approx.) 308 x 225 x 25mm (without tear-off perforations) ○ B5 Assembly Size: (approx.) 272 x 197 x 25mm ※ Assembly size is the maximum outer dimension; the inner dimensions will be 2-3mm smaller. There may be variations depending on the lot. Compatible with Yu-Packet and Click Post within the Nekopos standard size, and can also be used for regular mail (Teikeigai). Simple cardboard box specification to protect items, also provides some compression effect for clothing, etc., reducing anxiety about size measurement. Fold along the creases and package in an opaque plastic bag. If it doesn't fit in the mailbox, it will be delivered in person. Shipping on weekdays. #riraku materials ← This is the page for packaging materials.