This is an exclusive sticker sheet from the TGS! (Tokyo Game Show) it was only handed out at the Sonic Generations booth there. The sheet is pretty large too, with plenty of stickers in both rectangle & diecut shapes. It should be about 8.5 x 11. Each character is labeled in Japanese, and you get a nice mix of classic & modern Sonic & Tails. The sheet will likely become a rare item as it is an event exclusive.