For something on the casually cool end, pair a red and navy horizontal striped crew-neck t-shirt with charcoal sweatpants. You can get a little creative with shoes and complement this ensemble with a pair of white leather low top sneakers. Casual outfits for gentlemen in their thirties aren't actually that hard, as you see here.
For a laid-back look with a modern twist, opt for a red and navy horizontal striped crew-neck t-shirt and grey chinos. When in doubt about what to wear when it comes to footwear, stick to a pair of white leather low top sneakers. All in all, an ideal example of casual fashion for maturing gentlemen.
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