This is called the "Propaganda Style Sonic Tee".
It's a black tee in adults sizes only in 2019. It's probably an Amazon only item. The design is meant to look like a big poster that would have been plastered on outdoor walls, so it is rectangular. It has neoclassic ready for action Sonic on a background of yellow & red rays with black 'lightening bolt' type shapes toward the top. His name is spelled out in a blocky font at the top.
The 'propaganda' refers to they style of the background. A busy, bright background of lines was often used to attract people to look at a message ("made you look" type) on a poster, legally pasted up or not.
The neoclassic art with its action oriented pose & unusual background make this a good addition to shirts of 2019.