This modern casual combination of a crew-neck t-shirt and light blue jeans is very easy to pull together without a second thought, helping you look awesome and prepared for anything without spending a ton of time combing through your closet. Complete this getup with a pair of brown cowboy boots to add a touch of stylish nonchalance to this ensemble. So if you're in search of a look that's on-trend but also entirely season-appropriate, this just might be it. Men who wonder how to rock cool casual looks in your mid-20s, this outfit should answer your question.