![Navy and White Short Sleeve Shirt with Slip-on Sneakers Warm Weather Outfits For Men In Their 20s: For an outfit that's very straightforward but can be modified in a multitude of different ways, go for a navy and white short sleeve shirt and black sweatpants. If you wish to immediately perk up this outfit with footwear, why not add a pair of slip-on sneakers to the equation? Gentlemen who wonder how to rock cool casual outfits as you progress through your 20s, you have your answer.](https://cdn.lookastic.com/looks/harrington-jacket-short-sleeve-shirt-crew-neck-t-shirt-large-58888.jpg)
![Navy Harrington Jacket](https://cdn.lookastic.com/navy-harrington-jacket-original-11656445.jpg)
![Navy and White Print Short Sleeve Shirt](https://cdn.lookastic.com/navy-and-white-print-short-sleeve-shirt-original-11659710.jpg)
![Black Crew-neck T-shirt](https://cdn.lookastic.com/black-crew-neck-t-shirt-original-386784.jpg)
![Black Sweatpants](https://cdn.lookastic.com/black-sweatpants-original-4260368.jpg)
![Dark Green Canvas Slip-on Sneakers](https://cdn.lookastic.com/dark-green-canvas-slip-on-sneakers-original-9747707.jpg)
![Navy Plaid Baseball Cap](https://cdn.lookastic.com/navy-plaid-baseball-cap-original-11496794.jpg)
For an outfit that's very straightforward but can be modified in a multitude of different ways, go for a navy and white short sleeve shirt and black sweatpants. If you wish to immediately perk up this outfit with footwear, why not add a pair of slip-on sneakers to the equation? Gentlemen who wonder how to rock cool casual outfits as you progress through your 20s, you have your answer.