This is a small cardboard box. It can be used for: ◎ Click Post ◎ Yu-Packet ◎ Standard Mail (within specifications) etc. This is the minimum size compatible with Click Post and Yu-Packet. Although it is palm-sized, it is a box with an inner dimension of 26mm, so you can ship small items such as paperback books, small goods, and accessories. It is compatible with standard mail, so you can put it in a mailbox with a stamp attached (*^^*) You can mail it for 120 yen if the total weight including the box is up to 50 grams, and for 140 yen if it is up to 100 grams. [Product Details] Inner dimensions: Length 140 × Width 90 × Depth 26 mm Thickness: 1.1mm F/F (C5×C5) Weight: 34g per piece Capacity: 0.3L Total external dimensions: Approximately 28 cm Color: Brown Format: N-style *There may be errors depending on how it is assembled. [Shipping] After folding in a few places along the fold lines, it will be placed in an A4 size cardboard case, put into a B4 size OPP bag, and then shipped in a transparent plastic bag. The A4 size cardboard case will not be taped directly, so you can use it as a bonus. (^-^) *Please note that it will be shipped in a transparent plastic bag. The contents will be visible, so please understand. *We select the cleanest items possible, but there may be some scratches or dents from the time of purchase. Also, dents may occur during shipping, so we would appreciate your understanding. A4 Cardboard Yu-Packet Click Post Packaging Material Yuyu Mercari Mail Letter Case Cardboard Envelope A4 Envelope Cardboard Box