This is called the "Freeze Classic Black Tee".
It's a teens tee (so, fits most) for summer 2020. It's all black, but the design for the front is huge, going all the way to either edge with bright colors. (Tee seems not appropriately named but...) There's neoclassic jump/away Sonic, and neoclassic flying Tails in the upper/background. They're over a brightly colored Green Hill zone scene. Sonic's name is spelled out vertically in big blue & yellow Japanese letters down the right side. With big yellow borders & yellow checkers across the bottom, this is a bright and colorful shirt. The neoclassic art keeps it feeling fresh and different as well. A good design to collect for sure.