A red and navy plaid long sleeve shirt and jeans are veritable staples if you're planning an off-duty wardrobe that matches up to the highest sartorial standards. Infuse some stylish effortlessness into this look with a pair of white and black high top sneakers. Seeing as it's super hot outside, this combination is perfect and entirely summer-ready. Overall, a good demonstration of relaxed fashion for 20-something guys.