Show that nobody does semi-casual menswear quite like you do in a dark green shirt jacket and chinos. Shake up your ensemble with more relaxed footwear, like these brown athletic shoes.
Brown Athletic Shoes with Chinos Smart Casual Warm Weather Outfits
As you can see here, looking on-trend doesn't take that much time. Just wear a navy double breasted blazer and chinos and you'll look awesome. Go ahead and add a pair of brown athletic shoes to the equation for a fun feel.