This cardboard box can be used for shipping via Nekopos, Click Post, Yu-Packet, standard mail (within size limits), and Takkyubin 60 size. *This is a yakko-style (envelope-style) box that wraps the contents from all four sides.* Please note that there is a possibility of corner bends, dents, or wrinkles during delivery. Type: Yakko-style (envelope-style) Size: Internal size: 223mm x 308mm x 26mm thick External size: 225mm x 310mm x 29mm thick Color: Brown This is a yakko-style (envelope-style) box that wraps the contents from all four sides. It's easy to seal with tape, and it's the most affordable mail case, making it recommended for those who want to save on costs. ＜Supported Shipping Methods＞ Nekopos Yu-Packet Click Post Standard Mail Takkyubin 60 size Feel free to comment to negotiate the quantity. Sale Bonus ・If purchased on Monday/Wednesday/Friday/Saturday/Sunday If purchasing 40 to 59 sheets... +3 sheets If purchasing 60 to 99 sheets... +5 sheets If purchasing 100 to 149 sheets... +10 sheets If purchasing 150 to 199 sheets... +15 sheets If purchasing 200 to 249 sheets... +20 sheets *The day of the week the purchase is decided will be used to determine the bonus.*