This is called the "Race Off Throw"
It is another of the 'fleecy blankets', and appears in winter 2021. It is 46 x 60 inches, so, fairly large. The design here is interesting though...it uses a CG background of something Green Hill type, but filters it into black/white and also...not blurry but? Faded? Slightly out of focus looking? Over the background is applied a blue/perspective type line base and then colored stock art for running /fist forward Sonic, fists back running Knuckles and fist up running Tails. A large fully shaded gold ring in the background provides sort of a transition between it & the characters. (But seems slightly out of place with all the shiny detail while the characters are flat art that is totally unshaded & not-cg.) The whole blanket has a thin red border to add contrast.
The design is actually pretty interesting. It's not too busy, and there sure hasn't been anything like it on a blanket/throw before. It would likely be quite decent in a game room. An interesting item, but where is it sold?