I sell things on eBay quite frequently, and I do get a lot of international buyers. I'm sick of having to run to the post office and pay for the international postage out of my pocket, so I figured I could try printing out the international postage through the PayPal system. I've always done that with domestic orders, but when I go to print out international postage, it says I need a specific customs form that is huuuge. I ordered that customs form (2976-A) and the envelope that comes with it (2976-E) from the USPS website. I also ordered 10 Small Flat Rate boxes. But the problem is, the envelope is bigger than the box itself! The envelope is around 1" longer on each side and the top and bottom of it. When I go to ship something internationally, I just have the little form with the green thing on the left of it that fits conveniently on the package, but when I want to print postage with PayPal, I have to use this big form. So here are my 2 questions: 1) How do I attach the customs envelope onto the Small Flat Rate box? Am I supposed to wrap it around the package somehow? 2) Do I HAVE to use this specific form when printing out international postage via PayPal, or can I use the little customs form? I'm assuming not because when I go to print out the international postage on PayPal, it has me fill out the customs form online, which I'm assuming is the same size as the 2976-A form. Thanks! @BaronVonParty I can use the Small Flat Rate box to ship internationally. I just shipped an item internationally with that box the other day, actually. https://shop.usps.com/webapp/wcs/stores/servlet/ProductDisplay?catalogId=10001&storeId=10052&productId=10001641&langId=-1&parent_category_rn=10000002&top_category=10000002&categoryId=10000033&top=¤tPage=0&sort=&viewAll=N&rn=CategoriesDisplay&WT.ac=10001641 The Priority Mail Small Flat Rate Box is ... also can be used for international shipping.