To assemble a laid-back look with a twist, you can easily wear a sweatshirt and blue shorts. Add a playful feel to your outfit by rounding off with black suede work boots. So as you can see, it's a seriously stylish, not to mention spring-appropriate, look to keep in your transeasonal sartorial arsenal. Wondering how to nail casual looks well into your 30s? This pairing is the perfect answer.