Platform slipper
From Tardis Wiki, the free Doctor Who reference
Platform slippers were worn by some individuals in the 1970s to make themselves appear taller even as they went to lay down for the night. Dez Skinn owned a pair of them by 1979, wearing them on the night he decided to sleep on the notion of pitching a Doctor Who comic book to British publishers; (NOTVALID: The Origin of Doctor Who Magazine)