This combo of a grey check double breasted blazer and navy dress pants is a foolproof option when you need to look seriously sharp and sophisticated. And if you want to immediately tone down this ensemble with shoes, why not complete your outfit with a pair of navy leather tassel loafers? Come summertime you're looking for an outfit to keep you cool and stylish –– this look is perfect for this time. Interested in outfit ideas for gentlemen in their 30s? This combo is great inspo.