Le 31
Essential Wool-Blend Vest London Fit - Semi-Slim
4/5 (1)
CA$150.00CAD
In Stock
The Essential Wool-Blend Vest from Le 31 by Simons is a tailored sleeveless waistcoat in a London semi-slim fit. It features a deep V-neck, piped pockets, and a satiny back with an adjustable strap for waist cinching. Constructed from a slight-stretch European blend of wool and recycled polyester with thin lining, this vest pairs with matching jacket (12016-219224) and trousers (12016-219278) for a coordinated three-piece suit.
- Material
- Slight-stretch European fabric in a blend of wool and polyester made from recycled plastic bottles with thin lining
- Gender
- male
- Style
- formal, tailored, slim-fit
- Category
- Apparel & Accessories > Clothing > Suits
Color
BlackIndigo/Dark Blue
Size
384042444636
Specifications
Essential wool-blend vest in a semi-slim London fit, featuring piped pockets and a satiny back with adjustable strap.
Slight-stretch European wool-polyester blend with thin lining, piped pockets, satiny back.
- Material
- Slight-stretch European fabric in a blend of wool and polyester made from recycled plastic bottles with thin lining
- Secondary
- polyester
- Style
- formal, tailored, slim-fit
- Occasion
- work, formal, interview
- Gender
- male
- Age Group
- adult
- Condition
- new
- Category
- Apparel & Accessories > Clothing > Suits
Additional Attributes
- London fit (semi-slim)
- Piped pockets
- Satiny back with adjustable strap
- Slight-stretch European fabric
- Blend of wool and recycled polyester
- Thin lining
- Matching jacket and pant available separately
- Exclusive design from Canada
Product Insights
The Essential Wool-Blend Vest from Le 31 is a semi-slim fit suit vest with an adjustable waist strap that cinches to leave 1 inch of breathing room, a satiny polyester back lining that reduces friction and enables wear without a jacket, and a stretchy European wool-polyester blend containing recycled polyester that resists creasing. It is designed to match the corresponding jacket and trousers exactly, requiring dry cleaning. The deep navy variant is a dark indigo. Sizing recommends ordering the usual size or sizing down for between-sizes.
Verified claims
- Fit
- Semi-slim cut narrows waist, prevents side gap; adjustable strap and stretch ensure comfort.
- Sizing
- Order usual size, or size down for between-sizes; jacket and pants are separate.
- Back lining
- Satiny 100% polyester back lining reduces friction and is acceptable without a jacket.
- Adjustable strap
- Adjustable strap cinches waist to leave 1 inch of breathing room.
- Classic construction
- Adjustable strap is a classic suit-vest feature.
- Satin back
- Satiny back, a traditional suit-vest feature, allows jacketless wear.
- Stretch comfort
- Stretch fabric accommodates body movements and size variations for all-day comfort.
- Friction reduction
- Satiny back lining reduces friction against shirt and jacket.
- Waist adjustment
- Adjustable waist strap fine-tunes fit to accommodate natural waist changes.
- Wrinkle resistance
- Polyester in the stretch blend resists creasing and maintains shape.
- Recycled content
- The wool-polyester blend uses recycled polyester from plastic bottles.
- Fabric
- European wool-polyester blend is stretchy, wrinkle-resistant, and recycled.
- Design
- Canadian-designed London fit with adjustable waist strap and satiny back.
- Suit system
- Part of three-piece suit; satiny back is fine without jacket.
- Color shade
- Indigo/Dark Blue variant is a deep navy, not a bright indigo.
- Set matching
- Jacket and trousers designed to match this vest exactly.
- Dry cleaning
- Dry clean only to preserve fabric structure.
- Lining protection
- Satin back lining reduces wear from jacket lining.
Product record
- Title
- Essential Wool-Blend Vest London Fit - Semi-Slim
- Brand
- Le 31
- Price
- 150 CAD
- Availability
- In stock
Deep Research
London fit semi-slim: how it measures and fits
- Le 31 uses Stockholm for slim, Berlin for regular/straight, and London for a semi-slim cut that narrows at the waist — so this vest is the brand’s middle option, shaped to avoid boxiness without the tightness of a full slim fit.
- The wool-polyester blend’s slight stretch means the vest has enough give to stay comfortable over a dress shirt and to accommodate small size variations — between-size buyers can lean toward the smaller size for a cleaner fit without sacrificing comfort.
- Because London fit explicitly narrows at the waist, the vest is pre-shaped to follow the torso — and the satiny back strap lets you pull it in further without alterations, which is valuable for anyone whose off-the-rack vests usually gap at the sides.
Fabric blend and recycled content
- The fabric’s 'slight-stretch' property — built into the European wool-polyester weave — gives the vest just enough give to move with the wearer through reaching, sitting, and gesturing, preventing the binding that can afflict rigid tailored vests; this is a practical comfort gain for those who wear suits through long workdays.
- The polyester component inherently resists creasing and helps the vest maintain its structure throughout the day, so it emerges from a long commute or a desk-bound afternoon with fewer wrinkles than a pure wool vest — especially valuable for the unstructured back panel and adjustable strap that might otherwise show wear.
- The polyester content is made from post-consumer recycled plastic bottles, diverting waste from landfills and reducing dependency on virgin petroleum — a concrete sustainability advantage that sets this vest apart in the suiting separates market, where eco-conscious tailoring is still a niche differentiator.
Satiny back and adjustable strap purpose
- The adjustable strap on the back of the vest is not just a sizing fallback — it is designed to achieve a precise tailored fit, typically tightened to leave about 1 inch of breathing room; traditional tailors built in the strap knowing that gaining just 3-5 pounds would make a snug vest unwearable without it, so the adjuster lets the vest adapt to natural waistline fluctuations.
- Where tradition once dictated that a satin back should always be hidden, today it is common to wear a lining-backed vest without the jacket — the satiny sheen now reads as intentional formality rather than an orphaned suit piece, so you can remove your jacket and still look put-together.
- The satiny back on this Le 31 vest is a direct inheritance from tailored suit-vest construction where a smooth satin or cupro back allowed the waistcoat to glide effortlessly against the jacket lining, reducing friction and bulk — a functional detail that distinguishes a vest built to be worn as part of a proper suit rather than a standalone casual piece.
How it stacks up against comparable vests
- Sourcing the fabric from Europe — a region known for established textile manufacturing — adds a subtle mark of quality assurance and design consciousness to the vest, elevating its perceived substance beyond the typical blended cloth used at this price.
- Designed in Canada and exclusive to Simons, the London fit is a proprietary semi-slim silhouette that gives the vest a distinct tailoring identity rather than relying on a generic international pattern block — a detail that matters for those who value brand-specific cut philosophy.
- The vest is part of a full suit system with a perfectly color-matched jacket (SKU 12016-219224) and pant (SKU 12016-219278), enabling a three-piece suit build with the flexibility to choose different sizes for each piece — a practical bonus that single-vest-only SKUs cannot match.
- The satin back lining ensures the vest glides over a dress shirt without bunching, while the built-in adjustable strap allows for a customized waist fit right out of the box — two refinements that add genuine functional polish to the garment.
- The polyester in the wool blend is derived from recycled plastic bottles, fusing a tailored suit separate with a visible eco-story that separates it from the standard wool-poly vests that dominate the entry-level tailored market.
Image Analysis
3 images- 01
Product
Front view of a fitted black vest worn over a white dress shirt; visible details include a deep V front, three visible front buttons, two horizontal welt pockets, pointed hem, and a decorative brooch attached at the left chest pocket.
- Overall shapeSleeveless tailored vest with a deep V-front and a slightly tapered waist; the front hem forms two downward points at center front.
1 region
x 0.18 · y 0.18 · w 0.64 · h 0.56 (high) - Closure and buttonsSingle-breasted front with a vertical row of three visible round buttons; buttons are evenly spaced along the center front.
1 region
x 0.42 · y 0.36 · w 0.12 · h 0.30 (high) - Pocket styleTwo horizontal welt pockets on the lower front, one on each side; a small chest pocket on the left front holds a decorative brooch.
3 regions
x 0.25 · y 0.56 · w 0.18 · h 0.10 (high); x 0.57 · y 0.56 · w 0.18 · h 0.10 (high); x 0.62 · y 0.34 · w 0.14 · h 0.12 (high) - Decorative attachmentGold-tone decorative brooch with hanging chain and small embellishments clipped to the left chest pocket area of the vest.
1 region
x 0.70 · y 0.31 · w 0.07 · h 0.13 (high) - Fabric appearanceSmooth, matte black suiting fabric with a fine, even weave visible at normal viewing distance; no visible pattern on the vest fabric.
1 region
x 0.28 · y 0.20 · w 0.48 · h 0.52 (medium) - Armhole and shoulderArmholes cut close to the shoulder with narrow shoulder coverage exposing most of the white shirt sleeve beneath.
2 regions
x 0.18 · y 0.18 · w 0.26 · h 0.20 (high); x 0.66 · y 0.18 · w 0.20 · h 0.20 (high)
Other
Model wearing the vest photographed against a plain bright white background with soft even lighting; image shows upper body and part of jeans, slight motion in model pose and hair.
- Model and stylingMale model wearing a white dress shirt and a dark patterned tie underneath the vest; model is mid-action buttoning the vest.
1 region
x 0.16 · y 0.08 · w 0.68 · h 0.56 (high) - Background and lightingUniform white background with even, shadow-minimizing lighting and soft shadow under the model's lower torso.
- Crop and framingImage framed from just above the head to upper thighs, showing vest front and partial jeans; slight left-to-right angle with model turned slightly to their right.
- Image qualitySharp focus on vest and hands; no visible motion blur except minor hair movement.
Colors
solid black· vest body#141215dark black· buttons#110E12gold metallic· decorative brooch#C4C5CB- Overall shapeSleeveless tailored vest with a deep V-front and a slightly tapered waist; the front hem forms two downward points at center front.
- 02
Product
Full-length view of a three-piece suit worn by a model; central focus on the sleeveless buttoned vest layered under a single-breasted jacket and over matching trousers.
- Vest front constructionSleeveless vest visible under the jacket with a V-shaped front opening and a vertical row of five round buttons; lower hem of the vest forms a shallow pointed dip at center front.
1 region
x 0.38 · y 0.24 · w 0.24 · h 0.21 (high) - Jacket detailsSingle-breasted jacket worn open, with notched lapels, a left chest welt pocket, and two lower flap pockets; sleeves reach the wrist and reveal a small portion of a white shirt cuff at the right wrist.
1 region
x 0.29 · y 0.15 · w 0.42 · h 0.36 (high) - TrousersStraight-front trousers in the same dark fabric as the vest and jacket, with a pressed center crease visible on each leg and a slight break at the shoe line.
1 region
x 0.30 · y 0.56 · w 0.41 · h 0.40 (high) - Neckwear and shirtWhite dress shirt with a point collar and a narrow black necktie tied in a simple knot, the tie extending down over the vest.
1 region
x 0.43 · y 0.15 · w 0.16 · h 0.20 (high) - ShoesShiny black leather lace-up dress shoes with a visible low stacked heel and rounded toe.
1 region
x 0.31 · y 0.90 · w 0.38 · h 0.07 (high)
Other
Studio full-body shot of a standing male model against a plain light gray to white gradient background with soft, even lighting and a faint shadow on the floor to the model's right.
- Model poseFull-body model facing forward with hands partially in trouser pockets and weight shifted slightly to his left leg.
1 region
x 0.18 · y 0.05 · w 0.64 · h 0.92 (high) - Background and lightingPlain light neutral background with soft even studio lighting and minimal hard shadows; a subtle cast shadow appears beneath and slightly to the model's right.
- Image framingCentered vertical composition showing the model from head to shoes with small margins at top and sides and slightly more space below the feet.
Colors
near black· vest, jacket, trousers#0E0E0Ewhite· shirtblack· tie#0E0E0Egloss black· shoes#0E0E0D- Vest front constructionSleeveless vest visible under the jacket with a V-shaped front opening and a vertical row of five round buttons; lower hem of the vest forms a shallow pointed dip at center front.
- 03
Product
Rear view of a sleeveless tailored vest showing a central dark back panel, contrasting darker side panels, an adjustable waist strap with a small rectangular metal buckle, and a straight lower hem.
- Back center panelSingle-piece back center panel with a visible vertical seam down the middle, smooth matte fabric, slightly contoured to follow the model's back.
1 region
x 0.20 · y 0.12 · w 0.42 · h 0.52 (high) - Contrasting side panelsNarrow side panels on both left and right in a visibly darker shade than the center panel, running from armhole to hem and forming the vest's side seams.
2 regions
x 0.62 · y 0.12 · w 0.18 · h 0.55 (high); x 0.15 · y 0.12 · w 0.18 · h 0.55 (high) - Adjustable waist strap and buckleFabric waist strap across the lower back feeding through a small rectangular metal adjustment buckle, with short strap tails visible below the buckle.
1 region
x 0.42 · y 0.48 · w 0.16 · h 0.10 (high) - Lower hem and slight ventStraight lower hem with a slight downward center point and a short overlap where the strap sits; no visible external closures on the back.
1 region
x 0.18 · y 0.56 · w 0.64 · h 0.18 (medium) - Fabric textureSmooth, finely woven textile with a matte finish and minimal visible nap or sheen.
Other
Studio rear three-quarter product shot on a plain light background with a model wearing the vest over a white dress shirt and dark trousers; even soft lighting with minimal shadow.
- Model poseMale model shown from the rear three-quarter angle with head turned slightly to the right and both hands in trouser pockets.
1 region
x 0.28 · y 0.00 · w 0.44 · h 0.96 (high) - Background and lightingEven, neutral light gray studio background with soft diffuse lighting and a faint soft shadow cast to the left of the model.
- Image framingVertical composition tightly framing the model from upper thighs to above the head with the vest centered in the frame.
Colors
dark brown· back center panel#38332Fdeep black· side panels#322E2Bbrushed silver· waist buckle- Back center panelSingle-piece back center panel with a visible vertical seam down the middle, smooth matte fabric, slightly contoured to follow the model's back.
Documents & Data
Customer Reviews
1 total4
1 reviews · out of 5
Tout est parfait
★★★★★Richard M.
J'aime le tisssu, sa souplesse. Très léger et confortable
Q&A
4 answered- How does the London fit semi-slim compare to other brands' regular or slim fit vests? Should I size up or down for a typical suit vest fit?
- The London fit is a semi-slim, tailored cut — more fitted than a classic regular fit but not as tight as a true slim fit. It's designed to be worn as a standard suit vest, so we recommend ordering your usual suit size.
- What are the recommended care instructions? Is it dry clean only, or can it be spot cleaned or hand washed?
- Official care instructions are not provided in the product listing. Given the wool-polyester blend with a satiny back and thin lining, dry cleaning is recommended to preserve the fabric and structure.
- In the indigo/dark blue variant, is the color true indigo or closer to navy, and does it match the matching jacket and pants exactly?
- The variant is labeled 'Indigo/Dark Blue' — it's a deeper blue that may lean closer to dark navy than true indigo. The matching jacket (12016-219224) and pants (12016-219278) are designed as a set, so the color should match exactly.
- Is the satiny back made of the same fabric as the front, and does the adjustable strap allow for significant waist size adjustment?
- The satiny back is a separate lining fabric (likely polyester or a similar synthetic satin), not the same as the front wool-blend. The adjustable strap allows for waist size adjustment, typically a few inches, but the exact range is not specified.