This shirt is new for Fall 2019.
It's an Amazon item, in adults sizes only. It's classic style, but brings something fairly new to the table which is neo-classic running Sonic art that's...super-duper shaded. The whole thing looks almost airbrush levels of shading. He's surrounded by a circle of rings which are also shaded & at different angles such that they do look very golden in color. The classic logo is also in full color in front of him.
For some reason this is rather expensive at 29.99 when you can find it. Why is it more costly than other shirts? It seems pretty normal in fabric/design/scale. It's a nice tee that manages to blend classic without getting boring or looking like a repeat item.