This off-duty combination of a white and blue vertical striped long sleeve shirt and beige chinos is super easy to pull together without a second thought, helping you look awesome and ready for anything without spending too much time going through your wardrobe. If you want to break out of the mold a little, complement your look with brown leather chelsea boots. Guys who are curious how to pull off semi-casual outfits as you go through your 20s, this outfit should answer your question.