Look the best you possibly can in a raincoat and a navy suit. As for the shoes, go down the classic route with a pair of monks. Seeing as autumn is fast approaching, this outfit is a viable idea for in between seasons. Rock this outfit to pull together a more mature look as a guy in his 30s.
You'll be surprised at how super easy it is to put together this polished outfit. Just a raincoat married with blue dress pants. Rounding off with monks is a fail-safe way to infuse an added touch of style into this look. You can bet this look will become your uniform when cooler weather arrives. So if you're hunting for a good-looking and mature combo, this one is great.