![Khaki Cargo Pants with Long Sleeve Shirt Smart Casual Warm Weather Outfits In Their 20s: A long sleeve shirt and khaki cargo pants are among the key pieces in any man's versatile off-duty arsenal. Introduce white leather derby shoes to this look to switch things up. The ability to wear getups like this is one of the perks of approaching your 30s.](https://cdn.lookastic.com/looks/long-sleeve-shirt-short-sleeve-shirt-cargo-pants-large-52681.jpg)
![Light Blue Long Sleeve Shirt](https://cdn.lookastic.com/light-blue-long-sleeve-shirt-original-2899599.jpg)
![Navy Plaid Short Sleeve Shirt](https://cdn.lookastic.com/navy-plaid-short-sleeve-shirt-original-364434.jpg)
![Beige Cargo Pants](https://cdn.lookastic.com/beige-cargo-pants-original-1860513.jpg)
![White Leather Derby Shoes](https://cdn.lookastic.com/white-leather-derby-shoes-original-2410179.jpg)
![Black Sunglasses](https://cdn.lookastic.com/black-sunglasses-original-9639748.jpg)
![Burgundy Leather Watch](https://cdn.lookastic.com/burgundy-leather-watch-original-11345522.jpg)
A long sleeve shirt and khaki cargo pants are among the key pieces in any man's versatile off-duty arsenal. Introduce white leather derby shoes to this look to switch things up. The ability to wear getups like this is one of the perks of approaching your 30s.