This is the "Ring Collector's Club Tee".
It appears in the Sega Shop in 2019, and is about 24 dollars in adults sizes only. This all black tee only uses 2 colors for the deign, bright blue and darkish pink. It has modern 'ready for action' Sonic, but he has unusual shading to make it look more dramatic. The slogan appears small at the bottom along with some checkers and '1991'. The year Sonic started usually isn't used when Modern Sonic appears.
The look of the design is almost 1980s style with the use of color/geometric shapes and shading...however this makes it unusual enough that it succeedes at being quite different and pretty stylish.