Teaming a grey check double breasted blazer with a white dress shirt is a good choice for a classic and refined outfit. When in doubt as to the footwear, complement this look with black suede loafers. As a gent in his 30s, you want to start dressing with more sophistication. If that's the case, looks like this are perfect as inspiration.
White Dress Shirt with Grey Check Double Breasted Blazer Dressy Chill Weather Outfits For Men In Their 30s
To look like a real dandy at all times, pair a grey check double breasted blazer with a white dress shirt. All in all, a great insight into dressing as a man in his 30s.