Kohls is still at it in fall 2020, with still more Sonic pajamas. They must be a popular success that sells well, because this particular retailer just keeps ordering more and more pj sets with Sonic on them. It's too bad they only fit relativly little kids because the designs are fun and the prices are pretty reasonable for everything.
This particular set is called "Circuit Sonic" as it has a circuit-board pattern in the Sonic word spelled vertically. It uses 'getting ready to go' CG Sonic for the front of the short sleeve pajama top. The pants are blue with scattered & various modern

Sonic stock arts in black/white line. The 3rd piece is the shorts, but even this has a small Sonic element on it which is the modern logo on the waist band. This is a good set, the CG is fresh, the colors are all nice & having that usually 'tacked-on' feeling 3rd piece with actual Sonic branding on there is also a nice move. It should still be available there thru winter 2020...if it fits anyone you know. It should be in the boys section, next to 'teen' but not in it because it's too small.