Men's double breasted blazers

Men's double breasted blazers from Hackett London earn their place at the sharper end of the wardrobe: a silhouette rooted in British tailoring tradition, built for the man who knows that more structure, worn correctly, is never too much.

Cut and construction of men's double breasted blazers

The men's double breasted blazer is one of the more demanding cuts in tailoring — and one of the most rewarding when it fits. Hackett London approaches the construction with the same rigour applied to its Savile Row-adjacent suiting line, founded in 1983 on the principle that British tailoring should be wearable without being compromised. The key is the suppression: a double breasted jacket has to be taken in at the waist to avoid adding bulk, a balance achieved here through structured canvassing and a chest that sits flat without pulling at the buttons. Shoulder expression is natural rather than padded — a decision that keeps the silhouette contemporary rather than theatrical.

Fabrics across the range run from mid-weight pure wool — typically 280–310g, the weight that holds its line through a full day without overheating — to wool and cashmere blends in the more elevated models. Linings are full, cut in viscose or silk-blend for easy layering over a shirt or fine-knit, with the interior finishing — ticket pocket, pen loop, working buttonhole at the cuff — consistent across the range. The six-button, two-to-button configuration is standard; some models offer a four-button peak lapel variation that reads slightly more relaxed while keeping the silhouette anchored.

Fabrics and details worth knowing

Men's double breasted blazers in the Hackett London collection work across a palette that stays within the reliable rather than the experimental. Navy is the foundation — a true navy, closer to indigo than to royal blue, that works without trying against grey flannel, cream linen and dark denim alike. Charcoal and mid-grey follow. Seasonal iterations introduce herringbone tweed weaves in tobacco and green, and chalk-stripe wool for moments that call for something with a little more character at close range. All colourways are considered against the British light: muted enough to read well outdoors, rich enough to hold their own under office or evening lighting.

The peak lapel is the defining detail on most models — wider than the current trend, which gives the chest the visual breadth the cut demands. Contrast buttons in horn or corozo, hand-stitched lapel edges on the higher-tier pieces, and a back vent split for ease of movement: the construction decisions are quiet but deliberate, the kind that become apparent the first time the jacket is worn rather than the first time it is looked at.

How to wear men's double breasted blazers

The men's double breasted blazer rewards considered dressing. Two approaches that work at opposite ends of the register:

Navy wool double breasted blazer, white poplin shirt with a spread collar, mid-grey flannel trousers and black cap-toe Oxfords — the right kind of quiet for a board room or a members' lunch at Pall Mall.
The same blazer, left buttoned, over a fine-gauge merino roll-neck in oatmeal, tailored dark chinos and a suede loafer: the formality drops without the silhouette losing its authority.

The instinct to open a double breasted jacket when sitting is worth resisting. The cut is designed to be worn buttoned; the structure and the sweep of the lapel only make sense when the front is closed. A small discipline that preserves the line through a long afternoon at the office or an evening that runs on past dinner.

How to choose the right fit in men's double breasted blazers

The men's double breasted blazers in the Hackett London range follow a standard European chest sizing, but the cut has its own logic. The jacket should fasten without pulling across the chest — if the button stance gaps or the fabric creases horizontally below the fastening, size up. The shoulder seam should sit exactly at the shoulder point with no overhang; in a double breasted cut this is more critical than in a single breasted jacket, because the extra fabric on the front amplifies any misalignment. If you are between sizes, the smaller size is generally correct provided the shoulder fits: the chest and waist can be taken in, the shoulder cannot. Sleeve length is set for a 5'10"–6' frame; alterations to sleeve and body length are straightforward with any competent tailor.

What is the difference between a double breasted blazer and a double breasted suit jacket?

A double breasted blazer is cut as a standalone piece — typically in a solid or textured fabric with contrast or matching buttons, and intended to be worn with non-matching trousers. A double breasted suit jacket is part of a matched set, cut from the same cloth as the trousers, and functions as tailoring rather than separates. Hackett London's double breasted blazers are designed for the former: fabrics, buttons and construction are all chosen to work across a range of trouser options rather than as one half of a fixed ensemble.

Can men's double breasted blazers be worn casually?

Yes — the double breasted blazer has moved well beyond its strictly formal origins. Worn over a roll-neck, a fine-knit or even a plain T-shirt in a considered fabric, and paired with tailored chinos or dark jeans, it reads as deliberate rather than overdressed. The key is fit: a double breasted jacket that fits precisely at the shoulder and chest holds its authority regardless of what sits beneath it. The fabrics available in the Hackett London range — particularly the mid-weight wools and herringbone tweeds — are well suited to this kind of all-day, cross-register wear.

How should a men's double breasted blazer be stored and cared for?

Dry cleaning is the recommended method for all wool and wool-blend double breasted blazers. Between wears, hang the jacket on a wide, shaped coat hanger — the shoulder construction in a double breasted cut is more substantial than in a single breasted jacket and benefits from proper support. Allow at least an hour of airing after wearing before returning the jacket to a wardrobe; wool is a natural fibre that recovers its shape when given space and air. Avoid storing the jacket buttoned, as sustained pressure on the button stance over time can distort the front panels.