Knuckles fans can be pleased about this!
It's a cool solo-Knuckles notebook, with some stylish art for him! This is a white hard-card cover spiral bound notebook. The cover has the slogan "Good As Gold" in a blocky blue font. In the center of the curved font is modern ready for action Knuckles...but what's interesting is he looks like a combination of either highly shaded art or CG and also sketch work & a type of marker-style coloring/scribble. He's surrounded by a circle of rings, but the top rings are shaded to gold, while the others are red.
This partial coloring/shaders/line-work/sketch makes the art seem like it's popping off the cover, and his dynamic pose is interesting to see. He looks tough/action, as Knuckles should. It also doesn't look stale at all, it's very fresh and interesting.

This is a Sega Shop online store exclusive, and should be about 15 dollars. It IS steep for a regular notebook. It likely shouldn't be taken to school at that rate, rather used as an in-home item or a collectible because really...even though it is very cool to see that is a high price for bound paper. This is a winter 2019 item.