Elevator shoes are shoes that artificially make a man appear taller.
They are used by some short men to partially compensate for their inferior height, also Hollywood actors like Robert Downey Jr got busted for wearing it.
Shoe Lifts in PSL
Shoe lifts and elevator shoes were commonly used in PSL communities to get some extra centimeter, even if one was already tall. For instance, a 5'10 man could use shoe lifts to, "become", 6'0.