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: For purchases of 150-299 sheets: +5 sheets For purchases of 300-499 sheets: +15 sheets For purchases of 500-699 sheets: +20 sheets For purchases of 700 sheets: +30 sheets For purchases of 800 sheets: +50 sheets *The day of purchase will determine the bonus.