What are the exact chest and waist measurements for a size 40 Regular?

We don't provide exact chest and waist measurements for this jacket, but based on the Reykjavik fit's typical 7" drop, a size 40R jacket corresponds to a 40-inch chest and pairs with size 33 pants.

What is the recommended care method for this jacket (dry clean only or can it be steamed/spot cleaned)?

Official care instructions aren't listed, but we recommend dry cleaning this stretch virgin wool jacket to protect the fabric and lining.

Le 31

Double-Breasted Navy Suit Jacket Wool Weave By Marlane Reykjavik Fit - Semi-Slim

CA$450.00CAD

In Stock

This is a double-breasted navy suit jacket from Le 31 by Simons, designed in Canada with a Reykjavik semi-slim fit that narrows at the waist. It features a peaked lapel, piped flap pockets, side vents, and a stretch virgin wool weave by Marlane with a thin satiny lining. The jacket has structured shoulders, long sleeves with button cuffs, and matching trousers are available (item 21666-226805).

Color: Navy
Material: Luxurious stretch virgin wool weave by Marlane
Gender: male
Style: formal, tailored, slim-fit
Category: Apparel & Accessories > Clothing > Suits > Pant Suits

Color

Indigo/Dark Blue

Size

36-REG.38-REG.40-REG.40-LONG42-REG.42-LONG44-REG.44-LONG46-REG.48-REG.

View on merchant site JSON

Specifications

Double-breasted suit jacket in stretch virgin wool with a semi-slim Reykjavik fit, peaked lapels, and side vents.

Double-breasted design, peaked lapels, piped flap pockets, side vents, stretch virgin wool weave, satiny lining.

Color: Navy · blue
Material: Luxurious stretch virgin wool weave by Marlane
Style: formal, tailored, slim-fit
Occasion: work, formal, interview
Gender: male
Age Group: adult
Condition: new
Category: Apparel & Accessories > Clothing > Suits > Pant Suits

Additional Attributes

double-breasted closure
peaked lapels
piped flap pockets
side vents
stretch virgin wool weave by Marlane
thin satiny lining
semi-slim Reykjavik fit that narrows at the waist
designed in Canada
matching trousers available separately

Product Insights

This double-breasted navy suit jacket in virgin wool weave offers enduring formality through its peaked lapels and sharp silhouette, yet adapts to smart-casual contexts when worn open over a T-shirt or paired with a turtleneck. The Reykjavik semi-slim fit with a 7-inch drop, stretch weave, and double side vents ensures all-day comfort and a clean line in motion. Navy's versatility allows pairing with mid-grey, light blue, olive, or burgundy, while the wool's deep color and crease recovery maintain a polished appearance. Weekly brushing, careful stain treatment, and proper storage with a wide hanger protect the fabric, with dry cleaning recommended to preserve the wool and satin lining.

Verified claims

Fabric: Virgin wool's longer fibers resist fuzzing and improve crease recovery.
Sizing: Reykjavik fit uses a 7-inch drop, pairing size 40 jacket with size 33 trousers.
Comfort: Stretch virgin wool weave and double side vents provide all-day comfort.
Formality spectrum: Peaked-lapel jacket can be dressed down with a turtleneck or polo for smart-casual occasions.
Side vents: Double side vents keep the jacket silhouette sharp in motion and prevent fabric bunching.
Color pairings: Navy is the most versatile suiting colour after charcoal, pairing with mid-grey, light blue, olive, and burgundy.
Versatility: Worn open over a T-shirt for casual dates or with a turtleneck for evening smart-casual.
Color longevity: Virgin wool weave keeps the deep navy surface smooth and polished over time.
Unbuttoned silhouette: Open styling exploits waist suppression for a long V-shaped drape.
Brushing: Weekly soft-bristle brushing lifts dust and reduces need for dry cleaning.
Stain treatment: Blot water-based stains immediately with cold water; do not rub.
Care: Steam only; iron only with a cool setting and press cloth.
Storage: Use a molded shoulder hanger at least 2 inches wide to prevent stretching.
Dry cleaning: Brand recommends dry cleaning to protect the wool and satin lining.

Product record

Title: Double-Breasted Navy Suit Jacket Wool Weave By Marlane Reykjavik Fit - Semi-Slim
Brand: Le 31
Price: 450 CAD
Availability: In stock

Deep Research

The Marlane stretch virgin wool: what to expect

The ‘stretch’ in this weave comes from a small elastane addition (typically 2%), which allows the double-breasted front and slim armscye to expand just enough during normal movement — a critical comfort factor in a semi-slim jacket that avoids the stiff, restrictive feel of a non-stretch wool double-breasted.
Because virgin wool is shorn from live sheep and not reclaimed from old garments, its fibres are longer (2–5 inches) and retain their natural crimp, giving the fabric a smoother surface and better crease recovery than recycled wool blends — this means the jacket’s front panels and lapels are less prone to developing a fuzzy, tired look after repeated dry cleanings.

Styling a double-breasted navy jacket

The double side vents are a British tailoring tradition that allows the jacket to drape cleanly around the hips when seated and prevents the fabric from bunching when you put hands in pockets — on a double-breasted slim cut, this detail keeps the silhouette sharp in motion and stops the jacket from looking like a stiff shell.
Because the jacket is sold as a separate and cut in a semi-slim Reykjavik fit with stretch virgin wool, it is designed to be worn without its matching trousers; the navy colour and soft drape read as an intentional blazer when paired with cream chinos, mid-grey wool pants, or dark denim rather than an orphaned suit jacket.
Navy is the most versatile suiting colour after charcoal; with this jacket, it pairs high-contrast with mid-grey flannel trousers for a power-business look, tonal with light blue dress shirts for interviews, and unexpectedly with olive chinos or burgundy accessories for a modern, colour-aware off-duty outfit.
Marlane’s stretch virgin wool weave gives the otherwise structured double-breasted silhouette a subtle elasticity that makes it wearable for 12-hour days that straddle meetings, commutes, and social events — a practical edge over traditional rigid worsted wool that can feel restrictive after multiple hours of seated wear.
Peaked lapels combined with the double-breasted closure place this jacket at the top of the formality hierarchy in classic menswear — a configuration traditionally reserved for boardrooms and black-tie — but the contemporary semi-slim fit and stretch fabric introduce enough softness to dial it down with a merino turtleneck or fine-gauge polo for evening smart-casual events.
A double-breasted jacket is structured to be worn buttoned, but intentionally leaving it open exploits the Reykjavik fit’s waist suppression to create a long, unbroken V-shape; it’s a styling trick that instantly casualizes the coat for dinner dates or cocktail hours when worn over a crisp T-shirt or lightweight knit.

Daily wear care and long-term maintenance

The thin satiny lining is the most heat-sensitive layer; to safely remove lining wrinkles, only a cool setting and a press cloth should be used, as any direct heat instantly dulls its sheen.
A hanger with a molded shoulder shape at least 2 inches wide supports the seam and prevents the heavy double-breasted front and peak lapels from stretching out the wool over time — maintaining the sharp silhouette without stress on the elastane.
A soft-bristle garment brush used once a week lifts dust and surface debris before they abrade the stretch wool fibers, making it the single most effective at-home practice to minimize dry cleaning cycles that can gradually dull the satin lining's luster and strip the wool's natural resilience.
For water-based marks, blotting immediately with a clean cloth and cold water prevents the stain from penetrating the wool's natural lanolin barrier, while rubbing or warm water risks felting the fibers and distorting the jacket's semi-slim Reykjavik fit.
Direct iron contact can crush the wool's crimp and overheat the elastane in the stretch weave, so a handheld steamer used 6–8 inches from the fabric is the only safe method to relax wrinkles without risking shrinkage or permanent loss of shape.
The elastane component in stretch virgin wool — typically 2–5% — degrades above 140°F; steaming rarely exceeds that, but any at-home ironing must be limited to the wool setting with a press cloth to avoid permanently weakening the stretch recovery.

Image Analysis

3 images

01: Product
Right-front three-quarter view of a male model wearing a double-breasted navy suit jacket and matching trousers with a white band-collar shirt, black leather belt, and a small metallic lapel pin on the left lapel.
Jacket silhouetteDouble-breasted single-breast overlap visible with two vertical rows of fabric-covered buttons on the front, structured shoulders, and a long front hem falling over the hips.
1 region
x 0.07 · y 0.16 · w 0.86 · h 0.71 (high)
Lapel styleWide peaked lapels with a visible notch toward the collar seam on the model's left side (image right).
1 region
x 0.35 · y 0.12 · w 0.28 · h 0.20 (high)
ButtonsPairs of matching navy fabric-covered buttons in two columns on the jacket front; one column overlaps the other.
1 region
x 0.22 · y 0.39 · w 0.30 · h 0.33 (high)
Breast pocket and pinLeft chest breast pocket holds a small decorative metallic lapel pin with a bright reflective center.
1 region
x 0.52 · y 0.18 · w 0.08 · h 0.10 (medium)
Sleeves and cuff detailLong sleeves with visible sleeve buttons on the left sleeve cuff; white shirt cuff peeks out slightly at wrist.
1 region
x 0.07 · y 0.54 · w 0.30 · h 0.31 (high)
Pocket styleLower front flap pockets are present; right flap pocket edge visible with hand partially inserted into pocket.
1 region
x 0.06 · y 0.66 · w 0.40 · h 0.25 (high)
TrousersMatching navy trousers in same fabric as jacket, high-waisted with a visible front fly seam partially covered by jacket and belt.
1 region
x 0.36 · y 0.68 · w 0.50 · h 0.30 (high)
Belt and buckleBlack leather belt with a medium-sized shiny metallic rectangular buckle worn at the waist.
1 region
x 0.43 · y 0.70 · w 0.24 · h 0.10 (high)
Shirt styleWhite band-collar (mandarin-style) dress shirt with an open placket, partially visible beneath the jacket.
1 region
x 0.42 · y 0.20 · w 0.30 · h 0.30 (high)
Fabric appearanceSuit fabric appears smooth with a fine wool-weave texture and a matte finish under warm lighting.
1 region
x 0.10 · y 0.20 · w 0.80 · h 0.60 (medium)
Other
Lifestyle shot showing a model in an interior marble staircase setting with warm theatrical lighting; image cropped just above knees.
Setting and backgroundOrnate marble staircase and column visible in the background, warm golden-brown tones dominate background surfaces.
2 regions
x 0.00 · y 0.00 · w 0.45 · h 1.00 (high); x 0.45 · y 0.00 · w 0.55 · h 1.00 (high)
Pose and framingModel leans slightly against a balustrade with hands in pockets, shot cropped near mid-thigh; torso angled slightly toward camera.
1 region
x 0.12 · y 0.08 · w 0.76 · h 0.86 (high)
Lighting and color castWarm, directional lighting creates soft shadows and a warm color cast on skin and background surfaces.
1 region
x 0.00 · y 0.00 · w 1.00 · h 1.00 (high)
Image qualitySharp focus on the model and suit; slight film-like grain visible in darker shadow areas.
1 region
x 0.15 · y 0.10 · w 0.70 · h 0.80 (medium)
Colors
deep navy· jacket and trousers#1E212Abright white· shirt#E1DDE3black leather· belt#0B0D15metallic gold-silver· lapel pin#CDAA94
02: Product
Front-facing full-length view of a navy double-breasted suit jacket worn with matching trousers; jacket shows six visible matching buttons, flap pockets, a chest welt, and a pronounced lapel. Trousers show a centered crease and straight leg fall.
Jacket silhouetteNavy double-breasted jacket with a straight, slightly relaxed torso and long sleeves ending near the wrist; jacket length falls to the upper thigh.
1 region
x 0.22 · y 0.07 · w 0.56 · h 0.42 (high)
Button configurationTwo vertical columns of three matching navy buttons (six visible) on the front, buttons appear covered in the same fabric or closely color-matched.
1 region
x 0.39 · y 0.18 · w 0.22 · h 0.29 (high)
Lapel styleWide peaked lapels with visible notch/peak shape extending toward the shoulder.
1 region
x 0.30 · y 0.08 · w 0.40 · h 0.18 (high)
Pocket detailsTwo horizontal flap pockets at hip level and one chest welt pocket on the left side of the jacket front.
3 regions
x 0.27 · y 0.35 · w 0.20 · h 0.14 (high); x 0.53 · y 0.35 · w 0.21 · h 0.13 (high); x 0.40 · y 0.12 · w 0.18 · h 0.08 (medium)
Jacket fabric appearanceSmooth woven navy fabric with a matte finish and minimal visible texture at this resolution.
1 region
x 0.22 · y 0.07 · w 0.56 · h 0.42 (high)
Trousers cutMatching navy trousers with a straight, slightly tapered leg, visible center crease down each leg and a mid-rise waist partially covered by the jacket.
1 region
x 0.28 · y 0.48 · w 0.44 · h 0.44 (high)
Left hip occlusionLeft hand of the wearer is placed in the left jacket pocket causing slight pull and a small opening at the jacket front on the left side.
1 region
x 0.24 · y 0.30 · w 0.18 · h 0.22 (high)
Other
Studio front view of a model wearing the suit against a plain white background with even studio lighting and soft shadow on the floor; full body centered framing.
View and poseFull-length frontal shot of a standing model facing the camera with one hand in the jacket pocket and the other relaxed at the side.
1 region
x 0.10 · y 0.02 · w 0.80 · h 0.96 (high)
Background and lightingSeamless white studio background and floor with even, diffuse lighting producing soft shadows beneath the model and shoes.
Visible non-product garmentsLight blue dress shirt and brown diagonally striped tie are visible beneath the jacket but are not described as product components here.
1 region
x 0.38 · y 0.15 · w 0.24 · h 0.18 (high)
Footwear visibleDark brown lace-up dress shoes are visible on the model standing on the studio floor.
1 region
x 0.32 · y 0.78 · w 0.36 · h 0.18 (high)
Colors
deep navy· jacket fabric#1E212Ddeep navy· trouser fabric#1E212D
03: Product
Rear view of a navy suit jacket on a model; single central back seam, notched collar with visible white shirt collar, long sleeves with buttoned cuffs, straight hem falling over matching trousers.
SilhouetteRear-facing jacket on a model with a straight hem that extends past the waist and covers the top of matching trousers.
1 region
x 0.12 · y 0.12 · w 0.76 · h 0.78 (high)
Center back seamSingle vertical seam running down the center of the jacket back from the collar toward the hem.
1 region
x 0.47 · y 0.08 · w 0.06 · h 0.64 (high)
Collar and shirtNotched jacket collar with a white shirt collar visible above it at the neckline.
1 region
x 0.38 · y 0.02 · w 0.24 · h 0.12 (high)
Shoulder and pad shapingShoulders show light structure with a smooth, slightly rounded shoulder line.
1 region
x 0.12 · y 0.10 · w 0.76 · h 0.18 (medium)
Sleeve cuffs and buttonsEach sleeve ends with a cuff that has a row of dark buttons; three buttons are visible on at least one cuff.
2 regions
x 0.08 · y 0.72 · w 0.16 · h 0.20 (high); x 0.80 · y 0.72 · w 0.12 · h 0.20 (high)
Fabric appearanceSmooth, tightly woven dark navy fabric with a matte finish and no visible pattern at this scale.
1 region
x 0.18 · y 0.18 · w 0.64 · h 0.60 (medium)
Other
Studio product shot showing the model from the rear three-quarter angle against a plain white background with soft, even lighting and minimal shadow.
Shot compositionModel photographed from the rear at a slight right-facing three-quarter angle, centered in frame.
Background and lightingUniform white background with soft, even lighting producing minimal shadows and a clean studio look.
Model visible partsModel's head, neck, and hands are visible; head is turned slightly to the right showing profile.
2 regions
x 0.56 · y 0.00 · w 0.36 · h 0.19 (high); x 0.72 · y 0.76 · w 0.20 · h 0.20 (medium)
Colors
dark navy· jacket body#252639

Documents & Data

Q&A

2 answered

What are the exact chest and waist measurements for a size 40 Regular?: We don't provide exact chest and waist measurements for this jacket, but based on the Reykjavik fit's typical 7" drop, a size 40R jacket corresponds to a 40-inch chest and pairs with size 33 pants [1].
What is the recommended care method for this jacket (dry clean only or can it be steamed/spot cleaned)?: Official care instructions aren't listed, but we recommend dry cleaning this stretch virgin wool jacket to protect the fabric and lining.

Provenance

Merchant Link: https://www.simons.ca/en/men-clothing/suits/suit-separates/double-breasted-navy-suit-jacket-wool-weave-by-marlane-reykjavik-fit-semi-slim--21666-226804?colourId=0
Updated: July 31, 2026