Does the size of the Standard Shape Kiss Cut Stickers include the backing?

Yes, the Standard Shape Kiss Cut Stickers size includes the backing. The size of the kiss cut sticker (peeled sticker) is 0.5in less than the size of the entire sticker. For example, a 4x4in Standard Shape Kiss Cut Sticker would have a peeled sticker size of 3.5in x 3.5in.