Once you find your favorite shirt, you want it to last forever. The Topo Designs Dirt Long-Sleeve Shirt is up to the longevity task, constructed out of a hearty 7.5oz organic cotton with just a hint of stretch for durability. A casual button-up that's at home working in the yard or going out to dinner (as long as the restaurant has a minimal amount of fancy hors d'oeuvres), the Dirt Shirt will live to be as old as its namesake.