The Puma & Sonic Shoe Collaberation worked in 2020!
Puma, the famous shoe brand teamed up with Sega & Sonic to make THREE different pairs of 'subtle-Sonic' shoes that you see here. AND they are for adults in real adult sizes! AND Kids Too! So everyone is welcome to wear them, which, as fans know is a really good move but an awesome change from how things usually are. CG to Puma!
The first pair at top left are the "originals". Puma says that their colors are Sonic inspired with blue accents, 3 gold rings on each heel, and red/yellow/blue soles like the classic (Japanese type) box art. Here, you can find the Puma & Sonic face logo inside the shoe. There's also one on the square track area on the shoe sole, which is the same shape for every style of shoe. The other two pairs have checkering inside, but the same pair of logos.

The next shoe is the stylish all-black pair, but you can see it has an added Sonic face on one side, as well as the 3 rings on the back and the shoe tongue detail. These soles are red, blue and black. The last pair is possibly a little bit Eggman inspired too? The uppers are black but with a red fade toward the heel. The heel then has the green/red 'caution stripe' detail, plus a text block with the score/time/rings readout that's always on the game screen. This pair again uses the nice gold foil under the rings, and still has the shoe tongue detail. Confusingly though, the soles add a kind of odd salmon/plah-doh pink plus the hot green and black. It looks a bit odd with the red, but isn't terrible or anything.
These are certain to be "Subtile Sonic" items. Only upon quite close inspection of the shoe could a non-fan recognize the Sonic elements seen here. And, that is just fine for some people as well as merchandise variety being really super. The best thing though is that they'll fit anybody. These should be about $120.00 AND you can buy them on the Puma website as long as they don't sell out. This is an early 2020 item.