For a look that's super simple but can be styled in a myriad of different ways, team a navy vertical striped blazer with dark green chinos. Inject a hint of stylish nonchalance into your outfit by sporting a pair of white and black leather low top sneakers. A wonderful example of transitional style, this ensemble is a must-have this spring. This is a great and age-appropriate outfit for a gent in his 40s.