This rolling suitcase style backpack & soft-sides lunch bag have a spiked ring in common for their design background. The gold ring on both has 'spikes' kind of like the 'Sonic spin' shape. The rolling pack has lots of great detail, like Sonic on the top/small pocket, Tails, Knuckles and Shadow on the big exterior square pocket and a checker pattern with smaller Sonics on the edge. The side pocket has Sonic in a white star too. The lunch bag has the checker pattern as well, but everybody is inside the spiked ring. It has a red carry shoulder strap.
In this case, the seller has put with it the "Sonic mini Desk Set" which is an unrelated item. (You can see it on USA School already) Both bags have nice detail & cool modern design.