In spite of the existential concept that man cannot take the essence of his existence from someone else, in viewing this play, we have to view Vladimir and Estragon in their relationship to each other. In fact, the novice viewing this play for the first time often fails to note any significant difference between the two characters. In hearing the play read, even the most experienced theater person will often confuse one of the characters for the other. Therefore, the similarities are as important as the differences between them.
Both are tramps dressed in costumes which could be interchanged. They both wear big boots which don't necessarily fit, and both have big bowler hats. Their suits are baggy and ill-fitting. (In Act II, when Estragon removes the cord he uses for a belt, his trousers are so baggy that they fall about his feet.) Their costumes recall the type found in burlesque or vaudeville houses, the type often associated with the character of the "Little Tramp," portrayed by Charlie Chaplin.
The Chaplinesque-type costume prepares us for many of the comic routines that Vladimir and Estragon perform. The opening scene with Estragon struggling with his boots and Vladimir doffing and donning his hat to inspect it for lice could be a part of a burlesque routine. The resemblance of their costumes to Chaplin's supports the view that these tramps are outcasts from society, but have the same plucky defiance to continue to exist as Chaplin's "Little Tramp" did.
Another action which could come directly from the burlesque theater occurs when Vladimir finds a hat on the ground which he tries on, giving his own to Estragon, who tries it on while giving his hat to Vladimir, who tries it on while giving the new-found hat to Estragon, who tries it on, etc. This comic episode continues until the characters — and the audience — are bored with it. Other burlesque-like scenes involve Vladimir's struggles to help Estragon with his boots while Estragon is hopping awkwardly about the stage on one foot to keep from falling; another scene involves the loss of Estragon's pants, while other scenes involve the two tramps' grotesque efforts to help Pozzo and Lucky get up off the ground and their inept attempts to hang themselves. Thus, the two characters are tied together partly by being two parts of a burlesque act.