A4 Cardboard Boxes Perfect for Nekopos - 3cm Thickness! Set of 60 These versatile cardboard boxes are suitable for packing materials for Nekopos, Yu-packet, and Click Post, which are mainly used for flea market shipping. They are within the standard size for non-standard mail. Type: Yakko style (envelope style) Size: Inner dimensions - Length 30.8cm x Width 22.3cm x Thickness 2.6cm Outer dimensions - Length 31cm x Width 22.5cm x Thickness 2.9cm Thickness - 1.1mm Total of the three outer dimensions - 56 cm Color: Brown *The folded boxes will be wrapped in packing material for shipping. *Please note that the shorter side will be folded in the opposite direction from the original. *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. *Due to being paper products, there may be 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.