※ A5 cardboard boxes, perfect for shipping accessories and books, compatible with a thickness of 3cm! Set of 22 ⚠ This product is A5 size (approximately half the size of A4), please make sure you have the correct size! ⚠ These are versatile cardboard boxes that can be used as packing materials for the frequently used "Nekoposu," "Yu-packet," and "Click Post" shipping services for flea market sales. They are well-made and not cheap and poorly made! They are within the standard size for "Teikeigai" (non-standard size) mail. Type: Yakko style (envelope style) Size: Internal dimensions: Approximately 230mm long x 159mm wide x 26mm thick External dimensions: Approximately 232mm long x 161mm wide x 30mm thick Color: Brown ※ They will be folded and shipped in a宅配ビニール袋 (delivery vinyl bag). ※ Please note that the shorter side 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 cheapest among mail case options, making them recommended for those who want to save on costs. ※ <Supported shipping methods> Nekoposu Yu-packet Click Post Teikeigai (non-standard size) mail ※ Due to being paper products, there may be dents during shipping. Please purchase only if you can accept this. ※ The photos are just samples, so the actual product's color and shape may differ slightly from the photos, please understand.