A4 Cardboard Boxes, Perfect for Nekopos, Set of 50 These cardboard boxes are suitable for packing materials for Nekopos, Yu-packet, and Click Post. They are within the standard size for non-standard mail. Type: Yakko style (envelope style) Size: Internal - Length 30.8cm x Width 22.3cm x Thickness 2.6cm External - Length 31cm x Width 22.5cm x Thickness 2.9cm Total of the three external sides - 56 cm Color: Brown * We will ship the folded boxes wrapped in packing material. * Please note that the shorter sides and the flaps will be folded in the opposite direction from the usual. * This is a Yakko style (envelope style) shape that wraps the contents from all four sides. * They are easy to work with due to tape closure, and are the most affordable among mail case options, making them recommended for those who want to save on costs. * Please be aware that there may be dents during shipping due to the nature of paper products; please purchase only if you can accept this. * The photos are for illustrative purposes only, and the actual product's color and shape may differ slightly from the photos, please understand.