TL;DR (too long; didn't read):
- A double-breasted suit has far fewer style variables than a single-breasted — the correct configuration is four buttons with two showing, peak lapels, and straight pockets.
- Slanted pockets on a double-breasted suit violate traditional tailoring standards and are not considered correct regardless of personal preference.
- Ticket pockets are not placed on double-breasted suits — the style does not accommodate them within correct DB construction.
- Suit vents on a double-breasted are either side vents or no vents — no vents is the more traditional and formal option.
- Inside pockets on a double-breasted suit are unrestricted and can be specified in any number without affecting the external style rules.
Double-breasted suit style explained: the rules that define how a DB should always be made
Double-breasted suit style is one of the most tightly governed areas in tailoring. And that's not a criticism — it's actually one of the things that makes the double-breasted such a satisfying garment to commission. With a single-breasted suit, you're faced with a series of decisions before a single cut is made. One button or two? Two or three? Peak lapels or notch? Flaps or jettings? Ticket pocket or no ticket pocket? Three roll two? Each choice shapes the final look and each choice is genuinely open.
The double-breasted removes almost all of that. Not because it's a simpler garment — it isn't — but because traditional tailoring standards for a DB are so well established that deviation from them reads as a mistake rather than a personal choice. Four buttons with two showing. Straight pockets. No ticket pocket. Peak lapels. Side vents or no vents. That's it. Get those right and the coat looks exactly as a double-breasted should look. Get them wrong and even a beautiful cloth can't save it.
This guide covers all of it. The difference between single breasted vs double breasted in terms of the style decisions involved. The correct double-breasted suit button configuration and why it matters. The men's suit pocket styles that work on a DB — and the ones that simply don't. And the suit vents and flaps guide for a double-breasted, including why the most traditional option is no vents at all. By the end, you'll have a clear picture of exactly what a correctly made double-breasted suit looks like — and why the rules around it exist in the first place.
Single breasted vs double breasted and why the DB has far fewer style choices to make
The single-breasted suit is one of the most customisable garments in tailoring. Button count alone gives you three meaningful options — one, two, or three buttons — each producing a noticeably different silhouette and level of formality. Add lapel style into the mix and you have peak, notch, or shawl. Then pocket choices: flaps, jettings, or a combination. Ticket pocket or no ticket pocket. Straight or slanted. A three roll two configuration where a three-button jacket rolls to show only two. Each of these is a legitimate choice and each one shapes the finished coat.
The double-breasted suit operates on an entirely different logic. Where the single-breasted invites personalisation, the DB is governed by a clear set of traditional tailoring standards that leave very little open to interpretation. This isn't a limitation — it's a feature. When you commission a double-breasted, the decisions are largely already made. The cloth is your primary expression of personality. Everything else follows the rules.
Why does this distinction matter? Because men who are used to the open-ended nature of single-breasted tailoring sometimes approach the double-breasted expecting the same flexibility — and end up with a coat that looks wrong without quite being able to say why. A slanted pocket on a single-breasted can look sharp. The same pocket on a double-breasted suit looks out of place. Not because it's technically impossible to construct, but because it violates the visual logic that makes a DB work as a garment.
The single-breasted suit rewards experimentation. The double-breasted rewards adherence to form. Get the form right and the coat looks authoritative, elegant, and correct in a way that very few other garments achieve. Deviate from it — slanted pockets, a ticket pocket, an unconventional button arrangement — and the result tends to look like a coat that doesn't quite know what it is. That's the core difference between single breasted vs double breasted in terms of how they're approached in bespoke tailoring.
Double breasted suit button configuration and why four by two is the correct standard
The double-breasted suit button configuration is the detail that most immediately communicates whether a DB has been made correctly. And the correct answer, for a classically cut double-breasted, is four buttons with two showing. Four buttons in total on the front — arranged in two columns of two — with the lower two functioning as the working buttons and the upper two sitting as show buttons above them. This is the arrangement that gives a double-breasted its characteristic look: a strong vertical line, a clean front, and a silhouette that reads as both formal and structured.
Why four by two specifically? Because it balances the proportions of the coat correctly. The working buttons sit at the right point to close the jacket cleanly across the chest. The show buttons above them extend the visual line upward without adding bulk. The result is a front that looks intentional and considered — which, in a correctly made DB, it is. Change that configuration and the proportions shift. Some men have experimented with six by two, six by three, or other arrangements, and while these exist in tailoring history, they require a very specific type of coat to work and are not the standard that most bespoke tailors recommend.
There are occasional exceptions worth knowing about. A variation with the two working buttons positioned lower on the hip — inspired by mid-20th century film and associated with a particular era of double-breasted suit style — does appear in tailoring history and can work in the right context. But it's a deliberate departure from the standard, not an alternative to it. It reads as a reference to a specific aesthetic rather than a classic DB construction. For most men commissioning a double-breasted suit, four by two is the configuration that will serve them best across every occasion they intend to wear it.
Peak lapels complete the configuration. A double-breasted suit should always be made with peak lapels. The peak lapel echoes the strong horizontal and diagonal lines of the double-breasted front, reinforcing the coat's authority and formality. Notch lapels on a double-breasted look weak by comparison — the softer, rounder shape of the notch conflicts with the structured geometry of the DB front. This is one of the non-negotiables in double-breasted suit construction, and it's worth understanding why rather than simply accepting it as a rule.
Men's suit pocket styles on a double breasted and why straight flaps are the only option
Men's suit pocket styles on a double-breasted coat are more restricted than on any other suit configuration — and for good reason. The double-breasted front creates a strong set of horizontal and vertical lines across the jacket. The pockets must work with those lines, not against them. Straight pockets — whether flaps or jettings — run parallel to the horizontal lines of the front and sit cleanly within the visual structure of the coat. They look correct because they are correct.
Slanted pockets introduce a diagonal line into a garment built entirely on horizontals and verticals. On a single-breasted suit, a slanted pocket can add energy and a slightly more casual character to the jacket — it works because the single-breasted front is open enough to absorb that diagonal without conflict. On a double-breasted, the same diagonal fights against the geometry of the coat. It looks restless and out of place. You may see it done — it does appear in the West End occasionally — but seeing it done and seeing it done well are two different things. In traditional bespoke tailoring, slanted pockets on a double-breasted suit are simply not correct.
The choice between straight flaps and straight jettings is the one genuine pocket decision available on a DB. Flaps are the more common option — they cover the pocket opening, they add a small amount of visual weight to the lower half of the jacket, and they can be tucked in if a cleaner line is preferred. Jettings — where the pocket is finished with two narrow welts rather than a flap — produce a flatter, more formal result. The jetted pocket has no additional fabric breaking the line of the coat, which gives the jacket a cleaner and arguably more elegant appearance. Both are correct. The choice comes down to personal preference and how formal a finish is wanted.
Ticket pockets are not placed on double-breasted suits. The ticket pocket — that small additional pocket above the right flap — belongs to country and sporting suits, and within single-breasted tailoring it signals a more relaxed, informal character. On a double-breasted, it reads as a category error. The DB is a formal coat by nature. Adding a ticket pocket introduces an informality that conflicts with the overall character of the garment. Inside pockets, by contrast, are entirely unrestricted — you can specify as many as you need without affecting anything visible on the exterior of the coat.
Suit vents and flaps guide for double breasted suits and the case for no vents at all
The suit vents and flaps guide for a double-breasted suit is the shortest section in any conversation about DB construction — because there are only two options. Side vents or no vents. That's the complete list. A centre vent on a double-breasted coat would look wrong and is not something that appears in correctly made double-breasted tailoring. The centre vent belongs to single-breasted suits and, even there, it's the least formal of the three vent options.
Side vents are the majority choice on a double-breasted suit. They provide practical freedom of movement — particularly useful when sitting, when reaching, or when the coat needs to fall cleanly over a pair of trousers without pulling across the back. For most men commissioning a double-breasted suit, side vents are the correct and sensible default. They work across every occasion, they behave well in everyday wear, and they sit cleanly within the traditional construction of the coat.
No vents is the more traditional and more formal option. A ventless double-breasted produces a completely clean back — no breaks in the line, no openings at the hem, just a continuous fall of fabric from shoulder to hem all the way around. The silhouette is more austere and more deliberate. It's the construction that a tailor with a strong opinion about how a DB should look tends to favour for exactly that reason — it commits fully to the formal character of the coat without any concession to practicality.
The practical trade-off with no vents is real. Sitting in a ventless jacket pushes the back of the coat up and causes the fabric to bunch behind the seated wearer in a way that a vented jacket manages more gracefully. For a coat worn primarily standing — at formal occasions, at events, in contexts where the wearer is moving around rather than sitting for extended periods — the ventless construction causes no problems. For everyday office wear where a man spends most of the day at a desk, side vents handle the demands of the day more comfortably.
The decision comes down to how and where the coat will be worn. Both are correct. Both are traditional. The side vent is the practical choice. The no-vent is the purist choice. And if you're the kind of man who wears a double-breasted suit specifically because you like the idea of a coat with a point of view, the ventless construction has a lot going for it.
Custom double breasted suits built to traditional tailoring standards
A double-breasted suit done correctly is one of the most striking things a man can wear. The peak lapels, the strong front, the clean straight pockets, the unbroken vertical line from collar to hem — when all of those elements are right, the coat has an authority that very few other garments can match. But getting all of those elements right requires a level of construction control that off-the-rack simply doesn't offer. The DB is an unforgiving coat. Small errors in proportion or construction are immediately visible in a way they might not be on a softer, more casual garment.
At Westwood Hart, we build double-breasted suits the way they should be built — four by two button configuration, peak lapels, straight pockets, correct vents — and we build them to your measurements. That means the proportions are calculated for your specific body rather than averaged across a size range. The lapel width, the button placement, the pocket position, the vent length — all of it is set to work with your build rather than against it. A double-breasted suit that fits correctly is a transformative garment. One that doesn't fit looks like exactly what it is: a coat that was made for someone else.
Our online configurator lets you choose your fabric, confirm your construction details, and submit your measurements — and we build from there. Whether you want a classic double-breasted suit in a rich wool, a lighter cloth for warmer months, or something with a more distinctive character in a pattern or colour that reflects your personal style, we have the fabrics and the construction capability to deliver it correctly. The rules of double-breasted tailoring are clear. Our job is to execute them to the standard the coat deserves. Head over to our configurator today and start building yours.
Frequently asked questions
What is the correct button configuration for a double-breasted suit?
The correct configuration for a classically made double-breasted suit is four buttons with two showing — four buttons arranged in two columns on the front, with the lower two as the working buttons and the upper two as show buttons. This arrangement produces the correct proportions and the clean vertical line that defines a properly made DB. Six-button configurations exist in tailoring history but are not the standard recommended by most bespoke tailors for a classic double-breasted suit.
Can a double-breasted suit have slanted pockets?
No. Slanted pockets on a double-breasted suit conflict with the horizontal and vertical geometry of the coat's front and are not considered correct in traditional tailoring. A double-breasted suit should always have straight pockets — either straight flaps or straight jettings. Slanted pockets introduce a diagonal line that fights against the visual structure of the DB rather than working within it.
What is the difference between flap pockets and jetted pockets on a double-breasted suit?
Both are correct options for a double-breasted suit. Flap pockets cover the pocket opening with a fabric flap and add a small amount of visual weight to the lower jacket — the flap can also be tucked in for a cleaner line. Jetted pockets are finished with two narrow welts and no flap, producing a flatter and more formal result. Jettings give the jacket a cleaner, more streamlined appearance. The choice between the two comes down to personal preference and the level of formality required.
Can a double-breasted suit have a ticket pocket?
No. Ticket pockets are not placed on double-breasted suits. The ticket pocket belongs to country and sporting single-breasted tailoring and signals an informality that conflicts with the formal character of the DB. Inside pockets, by contrast, are unrestricted on a double-breasted suit and can be specified in any number without affecting the external appearance of the coat.
What lapel style should a double-breasted suit have?
A double-breasted suit should always have peak lapels. The peak lapel echoes the strong horizontal and diagonal lines of the double-breasted front, reinforcing the coat's formal authority. Notch lapels on a double-breasted look weak because the softer, rounder shape of the notch conflicts with the structured geometry of the DB. This is one of the non-negotiable construction standards in double-breasted tailoring.
Should a double-breasted suit have vents?
A double-breasted suit has two correct vent options: side vents or no vents. Side vents are the more practical and most common choice, providing freedom of movement and handling everyday wear comfortably. No vents is the more traditional and formal option, producing a completely clean back with an unbroken line from shoulder to hem. The choice depends on how and where the coat will be worn — side vents for everyday use, no vents for a more formal or purist construction.
How does a double-breasted suit differ from a single-breasted in terms of style options?
A single-breasted suit offers a wide range of style variables — button count, lapel style, pocket type, ticket pocket, vent options, and more. A double-breasted suit has almost none of those variables open to personal interpretation. The configuration is defined by traditional tailoring standards: four buttons with two showing, peak lapels, straight pockets, no ticket pocket, and either side vents or no vents. The cloth is where personal expression happens on a DB — the construction follows the rules.