One of the Arkentools. They were known to have been attuned to Judy Gale of the Haffaton Side. The Arkenshoes give the attuned wielder unlimited move and even the power to teleport their user to wherever it is that they consider "home".
The Arkenshoes are the only Arkentool that consists of a pair of items. Whether there is any significance to this is unknown.
Their power over movement and location might be connected to Weirdomancy or Hat Magic. Alternatively, keeping in line with fan speculation that all Arkentools are related to Fate aligned disciplines, it might be connected to Dollamancy, the Fate axis discipline consisting solely of Motion. This would be fitting in with Wanda's talk about how she doesn't have the sheer Dollamancy required to make anything like the Arkenshoes. It might have an additional connection to Dittomancy, in the form of an infinite duplication of a unit's move.
In the Wonderful Wizard of Oz, when Dorothy decided to return home, the Silver Shoes came off over the desert border, because they only held power in fairy lands like Oz and couldn't enter the mundane world. It is very likely that there was a similar effect on the Arkenshoes when Judy Gale returned to her own world.
Real World References
The shoes are a reference to the Silver Shoes once worn by the wicked witch of the East and given to Dorothy in the Wonderful Wizard of Oz. The fact that the Arkenshoes are red is likely a reference to one of the movie adaptations, in which they are called the Ruby Slippers instead.