High/Low Business Casual: Flannel DB Blazer With Jeans

3 / 5
With a layered sweater it is warm enough to not need an additional piece of outerwear.

4 / 5
Business casual with jeans? Yes. Just make sure they're dark and well-tailored.

5 / 5
Stay booted, my friends.

Not too buttoned up, not too loose

Regular HSS readers know that versatility is one of the core menswear and style values we preach continuously. When you acquire a new suit, one of the things you should be most eager to do is to figure out how many ways you can wear it. That goes for the entire suit as well as each individual piece.

Here, I’m breaking up the jacket from my new medium grey flannel double-breasted suit and giving it new life in a business casual setting.



| WEARING | Alan David Custom jacket, J.Crew sweater and jeans, Brooks Brothers Black Fleece shirt, Rolex watch, Boots c/o Allen Edmonds | PHOTOGRAPHY | by Rob McIver Photo

When can you wear a double-breasted jacket? Any time you’d wear a single-breasted jacket. When I wear mine casually, like with jeans, I prefer to leave it unbuttoned. It feels – and is literally – a little looser and less buttoned up.

Flannel is an amazing fabric for winter. It’s soft and very warm. So warm, in fact, that on days that aren’t incredibly chilly, a flannel jacket negates the need for additional outerwear. A thin layered v-neck sweater also helps.

Are jeans acceptable as business casual? The short answer is, yes. The long answer is here. Just make sure they’re dark and well-tailored.


Stay booted as much as possible this winter. Because before you know it, it’s going to be time for sockless loafers.


Thanks for reading.

Stylishly Yours,

Brian Sacawa
He Spoke Style


Chime In

  • Paul McCool

    I’m starting to rediscover the double breasted look, but feel they can look a little loose around the bottom when not buttoned up if you are of the slimmer type, like myself. (40″ chest,32″ waist)
    Of course if you get the suit tailor made, this effect can be negated somewhat, but I find off the peg DB suits don’t fit, unbuttoned, as well as its single breasted cousin.
    Keep up the great advice, Brian, and any chance of an article regarding the suit trousers worn without the matching jacket? I find it difficult to come up with ideas myself!
    Regards from the UK.

    • Peter

      Just my 2 cents, but generally it’s advised you don’t wear them as separates because you’ll wear them out unevenly. Hope Brian pitches in, as I’d like to hear his opinion as well…

      • http://hespokestyle.com/ Brian Sacawa

        Where have you heard that, Peter? You’re going to have to do a lot of wearing to achieve that!

        On that subject, however, a little bit of trivia. Not sure if you’ve eve noticed that some uniforms in the military have dark jackets and lighter pants? The Army, for example, has a dark blue jacket and lighter pants for the dress uniform. The reason the pants are lighter is that, back in the day, they were worn sans coat. And to your point, the sun bleached them, making them lighter than the coat. It’s a tradition that has been kept though I don’t expect that would happen as quickly today.

        • Peter

          To the first point, yes I know. I hope I’ll get to wear my clothes that much, haha!
          I love trivia; I didn’t know that! Thanks for sharing.

    • http://hespokestyle.com/ Brian Sacawa

      Paul, I completely understand where you’re coming from. I’m 69″ tall, 36″ chest, 30″ waist. And like I mentioned to Paul above, it is a different kind of look. But you either roll with it or you don’t

      Re suit trousers as separates… There are plenty of examples of that peppered throughout the site. Versatility is key!

  • Peter

    Like the outfit Brian, but I dunno about wearing the jacket unbuttoned. It kind of negates the fit and silhouette, and it looks from a far like excess fabric/a jacket too big.
    It think the casual DB could be achieved simply with soft shoulders, casual fabric and contrasting buttons, + the rest of the outfit.
    Also if you’re wearing a DB it’s generally because you could use the two layers of fabric for warmth, no?

    • http://hespokestyle.com/ Brian Sacawa

      Hey, Peter. You make some good points. I guess the main point I am trying to make is that you don’t necessarily have to always wear a DB jacket buttoned up. It’s a different kind of silhouette. Walking around MRket today, I saw more than a few sporting this kind of look. Maybe it’s just not for everyone.

      A DB jacket isn’t just worn for warmth. Two layers of fabric does provide more warmth, to be sure, but I never think of it as a practical part of the style.