B4 size delivery vinyl bags! If A4 is a little too small, but you need it to fit in the post... this size is convenient! *This size itself does not fit in the post. Please measure and confirm before posting. 80 microns thick! You'll understand the thickness just by touching it. Safe for the rainy and winter seasons! Why not give it a try? Multiple sets are also available! Perfect for sellers, as well as for small gifts or gift exchanges, as they conceal the contents! Water-resistant, making them convenient for posting in the mail★ Although new and unused, they will be packaged after being taken out of a bag of 100. They will be folded for shipping, and there may be creases upon arrival m(_ _)m We appreciate your understanding. I sometimes use them for water protection for 60-size boxes! I use them with confidence even over the box! *This is a personal opinion. #realiser Delivery vinyl bag B4 Pink