This tee is by Truffle Shuffle, in late 2015 / 2016. It's a white tee in mens' sizes, so it should fit anyone. The plain white tee has a large Sonic design, but it has that faux wear / weathering to the design to make it look faded when new.…
Two round patches. Notice that the Eggman one says "Professor Robotnik" even though in Japan, he was never supposed to be called that. The Tails is so cute on the second one! Although, a bit cross-eyed.