You'll be amazed at how easy it is for any guy to put together this laid-back look. Just a mint long sleeve shirt combined with navy chinos. Infuse a sense of stylish nonchalance into this outfit by finishing off with white leather low top sneakers. So when spring is in full effect, you may find this ensemble your go-to. When it comes to casual clothing for men in their thirties, this getup is a good look on most gents.