This is a pair of goofy little socks with a goofy little version of Superman made by a Korean company named Kiki. Kind of weird, but I like strange foreign versions of Superman.
Here’s the back of the tag, in case you can read Korean. It’s probably care instructions and such.
These are actually very cheap… only $4.55 including international delivery through this seller on eBay. The same seller has some odd socks of dogs dressed like superheroes, including Spider-man, Batman, and Wonder Woman.