This is a women's shirt called "Sonic Unstoppable".
Certainly here he can't be stopped by stains or splotches, which is what this shirt has. This is a 3/4 length sleeve shirt with black sleeves collar, & shoulders. It has a white body & back. The front has neo-classic leaping Sonic in color, as he jumpes over his name spelled out in the logo font & Japanese too. The white part has many spatters & blotches of blue dye. It's not tiedye (no tie pattern) and they have bleed edges that make them look sort of accidental. Including one on Sonic's shoe, discoloring it. This is probably a "Grunge" item. It is 45 pounds