【Yamato Transport】Koneko Bin 420 Special Envelopes - Set of 20 Thickness: 3cm No weight limit A4 size also fits This product allows you to write the recipient's address and send your package via Yamato Transport, and it will be delivered to the recipient's mailbox. The special envelopes are 420 yen each, including shipping! If you purchase the special envelopes here, you won't have to pay any shipping fees when you send your package. Detailed shipping instructions are written on the front of the envelope, so please read them. Shipping costs are the responsibility of the customer, so please let me know your preferred shipping method. Thank you for your understanding.