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 meet the standards for non-standard size mail. Type: Yakko-shiki (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 *The folded boxes will be wrapped in packing material for shipping. *Please note that the shorter sides and flaps will be folded in the opposite direction from the usual. *This is a Yakko-shiki (envelope style) shape that wraps the contents from all four sides. *Easy to work with due to tape closure, and it's the most affordable among mail case options, making it recommended for those who want to save on costs. *Please be aware that due to the nature of paper products, there may be some dents during shipping. 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.