If it's ease and functionality that you appreciate in menswear, try teaming a brown shearling coat with blue skinny jeans. Ideal if you're scouting for some incredibly inspiring casual style for 30-something gentlemen.
Brown Shearling Coat with Blue Skinny Jeans Casual Chill Weather Outfits For Men In Their 30s
This combination of a brown shearling coat and blue skinny jeans is super versatile and apt for whatever the day throws at you. For something more on the classy side to complete this ensemble, add brown suede casual boots to this outfit. This ensemble illustrates that as a gent in his thirties, you have a wide range of outfit options.