This is a cushion envelope with air cap (bubble wrap) on the inside of a kraft envelope. It is the maximum size that can be shipped via Nekopos or Yu-packet. It comes with an opening tape for smooth opening. *A4 size will not fit. Internal dimensions: 285 x 220mm External dimensions: 305 x 220 + 50mm Manufacturing error: + -5mm Thickness: Up to approximately 53mm Color: White Material: Recycled paper [Shipping] Please note that the flap will be folded and shipped in a delivery bag with Yu-Yu Mercari service with compensation. There may be some crushed air bubbles or minor scratches from the time of arrival, but this will not affect the shipment of the product. [Price] 3 sheets 399 yen 5 sheets 499 yen 9 sheets 699 yen 15 sheets 1099 yen 50 sheets 2999 yen 100 sheets 5799 yen You can buy it immediately. Sorry, no price reduction. You can change the number of sheets according to your points, such as when using points, so please comment (^.^) Bubble wrap Packing material Takkyubin wrapping Click Post