Originally just a hard-wearing trouser, jeans have become an emblem of our wardrobes. How to choose men's jeans with care? A flared or boot cut will tempt some, whereas others prefer the enduring fashion of a low waist slim fit. For slim and svelte men, followers of young fashion, go for a slim fit jean. Or to play the classic card, choose a real Levi's 501 or Pepe Jeans.