For a laid-back and cool getup, consider teaming a white and red vertical striped long sleeve shirt with brown chinos — these two items play beautifully together. A trendy pair of dark brown suede casual boots is an effortless way to punch up this look. This getup is a viable pick if you're crafting a standout look for summer-to-fall weather. When it comes to outfit ideas for 20-something men, this outfit looks great on almost any man.