If you're looking for a casual and at the same time seriously stylish look, consider teaming an olive camouflage field jacket with khaki chinos. If you wish to immediately dress down your getup with one single piece, why not introduce dark purple canvas high top sneakers to the mix? This ensemble is a really wonderful choice, especially for fall, when the temperatures are starting to drop. And if we're talking casual clothing for gents in their thirties, this combo looks nice on almost any guy.