Pair a beige long sleeve t-shirt with a navy suit if you're going for a sleek, stylish getup. For a modern hi-low mix, complement this ensemble with low top sneakers. As a 30-year-old gentleman, you probably want to start dressing like an adult man. That's when combos like this come in useful.
Putting together a beige long sleeve t-shirt and grey dress pants is a fail-safe way to infuse your wardrobe with some manly refinement. Rounding off with a pair of low top sneakers is an easy way to inject a sense of stylish nonchalance into this look. Now that's how you do semi-formal as a man in his 30s.