If you're on the lookout for a modern casual but also stylish outfit, reach for an olive quilted gilet and navy jeans. To introduce some extra classiness to your look, add a pair of grey suede desert boots to this getup. Rest assured, this ensemble will keep you cozy as well as looking sharp in this transeasonal weather. This combo illustrates that dressing appropriately for your age and looking stylish are not mutually exclusive things for a 20-something guy.