Two rows of brass buttons running straight down the chest are what make a double-breasted blazer recognisable at a glance. It carries a breath of the yacht club and a touch of the gravity of gentlemen of old. But it is also the most demanding kind of jacket to wear: when it fits it looks very elegant, when it is wrong it looks very heavy. So who does this jacket suit, and how do you choose it properly?
The short answer
A double-breasted blazer has two parallel rows of buttons and overlapping fronts, usually found in the classic 6x2 or the more compact 4x2. It suits tall men with balanced shoulders and a body that is not too full best. Wear it as a separate with grey, cream or white trousers. The jacket must fit at the shoulders and be buttoned closed to look right, because the overlapping cut is unforgiving.
What is a double-breasted blazer?
“Double-breasted” means the jacket has two layers across the chest: the left front overlaps the right front and is fastened with two rows of buttons. In Vietnamese it is also called a “two-row-button suit jacket” or a “cross-over front”.
The most familiar variant of this jacket is the club blazer: navy, with brass or gold buttons, worn as a separate with light-coloured trousers. The word “club” recalls the uniform jackets of sports and yacht clubs in the West, but today people wear it as an emblematic piece of classic elegance.
Unlike a single-breasted blazer, the double-breasted has a heavier structure at the chest and fronts, so it makes a stronger impression and also demands a more precise cut.
Button stances: 6x2, 4x2 and other variations
The notation is simple to read: the first number is the total number of buttons on the front, the second is the number of buttons actually used to fasten. The remaining buttons are decorative.
| Style | Features | Suits |
|---|---|---|
| 6x2 | Six buttons, two to fasten. The most classic, long fronts, wide lapels | Tall men, moderate shoulder width, balanced build |
| 4x2 | Four buttons, two to fasten. More compact, more open proportions | Men of average or slightly short height who like a modern cut |
| 4x1, 6x1 and other variations | Only one button fastened, less common | Men who like to break convention; ask your tailor for specifics |
For Vietnamese men, the 4x2 is usually the safer choice, because the proportions of the body are compact and it “swallows” the wearer less. The 6x2 needs a tall figure and balanced shoulders to look good. For more on button details, the article six-button men's suit jackets: 6x2, 6x1, 4x2 explains it more fully.
Length, shoulders and fit for Vietnamese builds
These factors decide whether a double-breasted looks “elegant” or “heavy”:
- Shoulders: match the shoulder point exactly. A shoulder structured a touch too stiffly makes the upper body look big. Choose a lightly structured shoulder so the line stays airy.
- Jacket length: just covering the seat. A jacket that is too long makes you look short; one that is too short makes the overlapping front look stubby.
- Lapels: peak lapels or lapels of moderate width are characteristic of this style. Very wide lapels suit tall men; shorter men should choose a medium lapel.
- Body: moderate waist shaping. The overlapping front already creates a V shape, and too sharp a waist suppression will make the jacket feel tight.
- Distance between the two rows of buttons: closer makes the body look slimmer, wider makes the body look bigger. A made-to-measure tailor will adjust it to the wearer.
Vietnamese men are generally of smaller build than Western models, so a ready-to-wear double-breasted jacket easily “swallows” the wearer. Made-to-measure allows the proportions to be adjusted exactly to each person, and that is where it has its strength.
Who suits it, and who should think twice?
- Tall men, medium or slim build: the ideal match. The two rows of buttons add width to the upper body.
- Average build, balanced shoulders: suits you if you choose a 4x2 with lightly structured shoulders.
- Shorter men: choose a 4x2, with fronts that are not too long and a medium lapel.
- Fuller around the stomach: be careful. Two layers of cloth make the stomach look thicker. If you like the style, choose made-to-measure, buttoned closed, in a plain matte cloth in a dark colour, or consider a single-breasted blazer.
- Narrow shoulders: the two rows of buttons make the upper body look fuller, but don't pad the shoulders too much.
What trousers to wear with it as a separate
A club blazer looks best worn as a separate, in contrast with light-coloured trousers:
- Mid-grey or light grey trousers: classic, fits every occasion.
- Cream or beige trousers: soft, suits daytime and hot weather.
- White trousers: a resort style, suits outdoor parties.
- Khaki or earth-toned chinos: more relaxed, suits weekends.
A white or pale blue shirt, a plain tie or no tie, and a flat-folded white pocket square are the familiar accompaniments. Brown leather shoes, loafers or black derbies all work, depending on the occasion.
How to button it, and a few small rules
- Button it closed when standing. A double-breasted jacket only looks right buttoned closed. Left open, the overlapping fronts sit crooked and look sloppy.
- Open it when sitting. When you sit down, unbutton the outer button to avoid pulling the jacket tight.
- Fasten the inside button (if there is one). The inner button keeps the inner front in the right place so the jacket doesn't twist out of line.
- Don't fasten the decorative buttons. Fasten only the real buttons according to the jacket's stance.
As for what goes underneath: many people search “double breasted blazer vest” or “double breasted blazer and vest” to ask whether a waistcoat can be worn under a double-breasted jacket. Technically, yes, but few do it, because the two layers are thick, hot to wear, and with the jacket buttoned closed no one sees the waistcoat. If you do, the waistcoat should be single-breasted and cut high, and is only suitable in cold weather. The article a waistcoat under a double-breasted suit discusses this topic in more depth.
Common mistakes
- Buying a double-breasted without being measured. An overlapping front with the wrong shoulders or the wrong length looks like a baggy coat.
- Buttoning it crookedly or leaving it open. The shape is lost completely.
- Choosing lapels that are too big and shoulders that are too structured. Heavy, ageing and old-fashioned.
- Pairing it with dark trousers in the same colour. You lose the contrast, and it looks like an odd mismatched suit, not a blazer worn as a separate.
- Choosing flashy buttons. Classic brass buttons look better than glossy, glaring ones.
A tip from Mon Amie's master tailor
The master tailor always says: “A double-breasted jacket must be tried on seated, too.” Standing straight and buttoned closed, any jacket looks passable. Only when you sit down, raise your arms and turn sideways do you see whether the overlapping front bulges out or pulls tight at the stomach. One small detail: the seam at the chest should lie smooth and flat, and the buttons must sit on the correct axis, not off-line. At Mon Amie, customers usually go through several baste fittings to adjust these details, so you can picture the level of care in the bespoke line. To learn about the cut of a groom's jacket, the article six-button double-breasted groom's suit has many examples.
Frequently asked questions
What is a men's blazer with a cross-over front?
It is the colloquial name for the two-row-button style: the two fronts overlap at the chest and are fastened with two rows of buttons. Many people also call it a two-row-button suit jacket.
Should a double-breasted blazer be worn with a waistcoat?
It can be, but it is uncommon because it is thick and hot. If you do, choose a single-breasted waistcoat, cut high, in the same shade or one notch lighter, and wear it only in cold weather.
Is a double-breasted blazer and vest a classic way to dress?
It is not a common style. The classic way to wear a double-breasted jacket is buttoned closed, without a waistcoat. A waistcoat underneath is normally for single-breasted suit jackets.
Does a double-breasted blazer suit Vietnamese men?
Yes, if you choose the right cut. For the typical Vietnamese build, the 4x2 is usually easier to wear than the 6x2. What matters most is a shoulder that fits and a moderate length, so made-to-measure usually gives better results than ready-to-wear.
Closing thoughts
The double-breasted jacket is a piece about polish: brass buttons in a straight line, matching shoulders, a flat overlapping front, buttoned closed. On the right man, in the right cut, it gives an air of elegance that few jackets can match. If you would like to try one, book a fitting at Mon Amie or first take a look at the bespoke tailoring service.