When it comes to defining the quintessential travel staple, nothing beats a crisp oxford shirt. Enter 192-year-old Brooks Brothers, no stranger to men and women on the go, having outfitted everyone from Presidents Lincoln, Kennedy, and Obama to the cast of Mad Men. After introducing a cotton-blend version more than half a century ago, the venerable American institution went one better in 1997 by pioneering the wrinkle-resistant button-down. There’s the classic men’s Ainsley, with its two-ply cotton, pucker-free seams, and single-needle tailoring, and an equally versatile slim-fit women’s style with added stretch. Wear it with a smart blazer or untucked over your favorite pair of jeans; either way, you’ll look as chic at takeoff as you will having a nightcap in the hotel bar.