These are double-sided white cardboard boxes that can be shipped via standard-size postal mail, Yu-Packet, and Click Post. Please note that there is a possibility of corner bends, dents, wrinkles, etc. during delivery. Internal dimensions: Approximately 134mm x 82mm x 24mm External dimensions: Approximately 143mm x 93mm x 28mm Total external dimensions (sum of all three sides): Approximately 27cm Weight: Approximately 23g If the total weight including the box is within 50g for standard-size postal mail, the shipping cost is 120 yen; if it's within 100g, the shipping cost is 140 yen. The cardboard boxes will be shipped unassembled. Please refer to the product images for details. Negotiations on the quantity are welcome. Feel free to comment. Sale Bonus! If purchased on Monday/Tuesday/Thursday/Saturday/Sunday: If purchasing 150-299 sheets: +5 sheets If purchasing 300-499 sheets: +15 sheets If purchasing 500-699 sheets: +20 sheets If purchasing 700 sheets: +30 sheets If purchasing 800 sheets: +50 sheets *The day of the week the purchase is finalized will be used to determine the bonus.