You could fit a larger wheel in there too, maybe even a tiny motor and drive train.

Seems slightly dangerous…

I love how many people are genuinely considering these shoes in the comments.

I have feelies about these heelies

No one they/them should have so much power

Ok armored core

I always wanted to try those.

But I didn’t wanna commit the money until I had some assurance of success.

I would unironically wear those everywhere

Least you can’t break your ankles?

Spring-heeled Jack boots or gtfo

i have heelies at home… my most priced possession.