Here's why:
* Prepositional Phrase: The phrase "for himself" acts as a prepositional phrase.
* Preposition: "for" is the preposition.
* Object of the Preposition: The word that follows the preposition and receives the preposition's action is the object. In this case, it's "himself".
The prepositional phrase "for himself" modifies the noun "shoes", telling us who the shoes are intended for.