For a casually classic getup, try pairing a waistcoat with navy chinos — these items go really nice together. When in doubt about the footwear, throw in a pair of brown leather double monks. If you often wonder how to dress as a guy in his 20s, this combo is a wonderful example.
Navy Chinos with Waistcoat Warm Weather Outfits In Their 20s
For something on the classic and casual side, you can dress in a waistcoat and navy chinos. Brown leather dress boots will bring an extra dose of class to an otherwise everyday outfit. A fail-safe option outfit appropriate for 20-year-old gents who prefer smarter looks.