This casual combination of a crew-neck sweater and white jeans comes in useful when you need to look casually cool but have no time. Our favorite of a great number of ways to round off this outfit is with a pair of tan boat shoes. So if you're looking for an outfit that's on-trend but also entirely spring-appropriate, you found it. Think 50-something gentlemen can't pull off cool casual dressing? This combo is irrefutable proof of otherwise.