For an outfit that's casually sleek and GQ-worthy, consider pairing a grey blazer with blue jeans. To introduce a bit of classiness to your ensemble, introduce brown leather loafers to your ensemble.
Grey Blazer with Blue Jeans Warm Weather Outfits For Men
This menswear style with a grey blazer and blue jeans isn't a hard one to create and leaves room to more experimentation. To add a little fanciness to your outfit, complete your ensemble with navy suede tassel loafers.