They added Soap Shoe Sonic into SSS!

He even has his SA2 Sound effects.

Why did Sonic only wear his Soap shoes in Sonic Adventure 2 and Sonic Pinball Party? : r/SonicTheHedgehog

Discuss Everything About Sonic Wiki Zone

Grind Shoe Sonic, Sonic Speed Simulator Wiki

Sega Fans Burning Their Soap Shoes After Sonic Adventure 3 Backlash

Sonic Frontiers Newsletter Subscribers Will Get Adventure 2's Soap Shoes

Sonic's Soap Shoes Render by Detexki99 on DeviantArt

SONIC SPLIT - Sonic Audio Drama (@S0NICSPLIT) / X

If Sonic could wear the Soap Shoes in more Games

sonic soap shoes custom action figure｜TikTok Search

Should Sonic of kept the SOAP shoes for all the 2000s? - Sonic Chat - Sonic Stadium

Triple S.S.S. - Sonic the Hedgehog Photo (37808532) - Fanpop

A Quick Run Through of Sonic's Skaterboi Sneakers

So, we got leaked concept arts of upcoming Sonic series, and Sonic gets a new shoes, but : r/SonicTheHedgehog