This laid-back combo of an olive shirt jacket and grey shorts is very easy to put together without a second thought, helping you look sharp and ready for anything without spending a ton of time digging through your wardrobe. Serve a little mix-and-match magic by slipping into athletic shoes. Come extremely hot summer days you're looking for a look to keep you comfortable and dapper –– this getup is ideal for this time. Wondering how to master casual style in your twenties? This combination is the perfect answer.