Pair a navy double breasted blazer with a long sleeve t-shirt to don a proper and classy outfit. Spice up your getup with a more laid-back kind of footwear, like these dark brown leather work boots. Keep this outfit ready to go when warmer days are here, and we promise you'll save a lot of time trying to pick out what to wear on more than one occasion. Great for a guy in his 20s if you want to project a mellow image.