
Le 31
Washable Monochrome Pant London Fit - Slim Straight
This is a pair of men's dress pants from the Le 31 by Simons brand, featuring a London fit with a slim-straight silhouette from thigh to ankle. They are made from a stretch fabric blend of viscose and reprocessed polyester, making them machine washable and easy care for travel. Key features include a flat front, belt loops, side pockets, back welt pockets, and an unfinished hem for tailoring.
Color
Size
Specifications
- Material
- Leg Lining: 100% polyester
- Gender
- male
- Age Group
- adult
- Condition
- new
Product Insights
The Washable Monochrome Pant by Le 31 is a machine-washable tailored pant in a slim straight London fit, priced at $125. It combines a soft, fluid viscose-blend fabric with a smooth hand and 30-minute wrinkle recovery, making it ideal for travel. The pants are sold with an unfinished hem for customizable break style, pair with a matching jacket for a travel suit, and feature a leg lining for easy dressing. Main tradeoffs: machine washing saves dry-cleaning costs but requires air drying to prevent shrinkage, and breathability is less than cotton or linen.
Verified claims
- Fit comparison
- Narrower than Berlin fit, more relaxed than Stockholm fit.
- Hem customization
- Unfinished hem allows choice of break style.
- Travel suit
- Pairs with matching jacket for a machine-washable suit.
- Drape and hand feel
- Viscose-blend fabric has a soft, fluid drape and smooth, non-plasticky hand.
- Wrinkle recovery
- Sheds packing folds in 30 minutes and recovers from bagging faster than wool.
- Breathability
- Breathability is better than all-polyester but less than cotton or linen.
- Travel versatility
- Matching jacket, leg lining, versatile fit, and unfinished hem optimize travel use.
- Care
- Machine washable saves $15–40 dry-cleaning costs; air drying prevents shrinkage.
- Cost savings
- At $125, these pants cost less than Le 31's wool trousers and incur no dry-cleaning costs.
- Fabric
- Viscose blend yields soft drape, 30-min crease recovery, and better breathability.
- Exclusivity
- Exclusive Simons house brand; unfinished hems and matching jacket make a tailored travel suit.
- Travel convenience
- Matching jacket, leg lining, and unfinished hem suit travel and fit.
- Suit system
- Matching jacket lets pants serve as a full suit or separates, reducing carry-on bulk.
- Crease recovery
- Recovers from fold marks within 30 minutes; maintains pressed crease through the day.
- Hem break
- Choose from no-break, slight-break, or medium-break hem.
- Hemming
- In-store hemming is free; online buyers pay $10–20 for a tailor.
- Leg lining
- Polyester leg lining reduces friction for easy dressing over dress shoes.
Product record
- Title
- Washable Monochrome Pant London Fit - Slim Straight
- Brand
- Le 31
- Price
- 125 CAD
- Availability
- In stock
Image Analysis
3 images- 01

Product
Front view of a pair of slim straight navy dress pants worn by a male model; visible waistband with black belt, trouser front seams and pressed crease, and full-length legs finishing above black leather dress shoes. Model wears a short-sleeve cream henley tucked into the pants.
- Pants silhouette and fitFront-facing slim straight trousers with a mid-to-high waist, flat front, and a visible center front crease running down each leg.
1 region
x 0.31 · y 0.36 · w 0.38 · h 0.52 (high) - Waistband and beltNarrow black belt threaded through the pants waistband with a rectangular metallic buckle centered at the front.
1 region
x 0.33 · y 0.43 · w 0.34 · h 0.05 (high) - Fabric appearanceSmooth woven fabric with a matte finish and subtle tailoring creases visible on the thigh and knee areas.
1 region
x 0.31 · y 0.38 · w 0.38 · h 0.48 (medium) - Pocket and fly areaFront fly seam visible; side pocket openings implied by slight shaping at the hips but pocket openings are not prominent.
1 region
x 0.31 · y 0.41 · w 0.30 · h 0.18 (medium) - Lower leg and hemStraight hem finishing close to the top of the shoes with slight fabric break at the front of the ankles.
1 region
x 0.32 · y 0.78 · w 0.36 · h 0.16 (high) - Visible garment above pantsShort-sleeve cream henley shirt tucked into the waistband, with a three-button henley placket visible on the chest.
1 region
x 0.20 · y 0.06 · w 0.60 · h 0.36 (high) - Shoes visible as part of outfitPolished black leather dress shoes with rounded toe and low heel visible at the bottom of the frame.
1 region
x 0.30 · y 0.82 · w 0.40 · h 0.12 (high)
Other
Studio full-body front shot of a male model against a plain light background with soft even lighting and minimal shadowing on the floor.
- Shot compositionFull-body portrait framing from slightly above floor level showing the model centered in the image.
- Background and settingUniform light gray to off-white seamless studio background with a faint horizontal floor-to-wall seam near the model's feet.
1 region
x 0.00 · y 0.84 · w 1.00 · h 0.16 (high) - Model poseModel stands facing the camera with hands positioned behind the back and legs slightly apart.
- Lighting and shadowsSoft, even studio lighting with a subtle shadow beneath and slightly behind the shoes on the floor.
1 region
x 0.28 · y 0.88 · w 0.44 · h 0.06 (medium) - Image croppingTop of the model's head is fully visible but close to the upper edge of the frame; full feet included with slight floor margin.
Colors
navy blue· pants#242B42black· belt#0E1324black· shoes#0E0E0Dcream· shirt#CAC6C2- Pants silhouette and fitFront-facing slim straight trousers with a mid-to-high waist, flat front, and a visible center front crease running down each leg.
- 02

Product
Front view of a pair of dark navy flat-front dress pants shown on a model from waist to shoes, slim-straight silhouette with center creases and belt loops.
- Overall silhouetteSlim-straight tapered trousers shown on a model from the natural waist to the shoes, with a straight leg line and slight taper toward the ankle.
1 region
x 0.15 · y 0.14 · w 0.70 · h 0.76 (high) - Waistband and belt loopsStructured waistband with evenly spaced belt loops visible at front and sides; waistband sits at the model's natural waist.
1 region
x 0.22 · y 0.14 · w 0.56 · h 0.08 (high) - Front closureConcealed front fly closure with no visible buttons or zipper teeth; center front seam aligns with the fly.
1 region
x 0.40 · y 0.18 · w 0.20 · h 0.12 (high) - Front creasePressed vertical crease running down the center of each pant leg from hip to hem.
2 regions
x 0.28 · y 0.20 · w 0.12 · h 0.66 (high); x 0.58 · y 0.20 · w 0.12 · h 0.66 (high) - Side pocketsSlightly angled side seam pocket openings visible at upper hips on both sides.
2 regions
x 0.18 · y 0.25 · w 0.16 · h 0.12 (high); x 0.66 · y 0.25 · w 0.14 · h 0.12 (high) - Fabric appearanceSmooth woven fabric with a slight matte-to-satin finish and minimal visible texture.
1 region
x 0.30 · y 0.24 · w 0.40 · h 0.58 (high) - Hem and fit at ankleClean finished hem that falls to the top of the shoes, with a small break at the front of the ankles.
1 region
x 0.30 · y 0.76 · w 0.40 · h 0.18 (high) - Visible creasing at kneeMinor horizontal crease lines visible at the front of the knees from natural bend.
1 region
x 0.40 · y 0.46 · w 0.20 · h 0.10 (high)
Other
Studio product shot showing model wearing the pants against a plain light gray background; black dress shoes and model hands are visible; even soft lighting with subtle shadows under shoes.
- Background and stagingPlain light gray studio background with a smooth floor surface and no props.
- Model elements visibleLower torso and legs of a model are shown; portions of the model's hands are visible at the sides and a white shirt hem is visible at the waist.
1 region
x 0.10 · y 0.02 · w 0.80 · h 0.20 (high) - Footwear visibleBlack polished leather dress shoes with laces visible on the model's feet.
1 region
x 0.32 · y 0.84 · w 0.34 · h 0.14 (high) - Lighting and shadowsEven soft studio lighting from front with subtle soft shadow cast beneath shoes and along inner leg seams.
Colors
dark navy· pant fabric#242B43- Overall silhouetteSlim-straight tapered trousers shown on a model from the natural waist to the shoes, with a straight leg line and slight taper toward the ankle.
- 03

Product
Rear view of a pair of slim-straight tailored pants in a dark navy color; visible waistband with belt loops, two buttoned welt back pockets, pressed creases down the legs, and straight hems falling over dress shoes.
- View and poseRear view of pants worn by a model with the waistband visible and the legs extending fully to the shoes; model's hands are visible at the sides and a tucked white shirt is partially visible at the top of the waistband.
1 region
x 0.12 · y 0.04 · w 0.76 · h 0.92 (high) - Waistband and belt loopsStraight waistband with evenly spaced belt loops visible across the rear; waistband aligns with the top of the back pockets.
1 region
x 0.22 · y 0.08 · w 0.56 · h 0.08 (high) - Back pocketsTwo horizontal welt back pockets with a single dark button on each pocket; pocket welts are narrow and sit symmetrically on either side of the center back.
2 regions
x 0.28 · y 0.14 · w 0.16 · h 0.06 (high); x 0.56 · y 0.14 · w 0.16 · h 0.06 (high) - Buttons on pocketsSmall round dark buttons securing each back pocket; buttons appear to be sewn through a single hole area and are darker than the pant fabric.
2 regions
x 0.30 · y 0.15 · w 0.04 · h 0.04 (high); x 0.64 · y 0.15 · w 0.04 · h 0.04 (high) - Front side pockets (partial)Slightly visible diagonal openings of side pockets on each hip just below the waistband, seen from the rear angle.Partial
2 regions
x 0.18 · y 0.18 · w 0.10 · h 0.12 (medium); x 0.72 · y 0.18 · w 0.10 · h 0.12 (medium) - Center back seam and leg creasesVisible pressed creases run down the center of each pant leg from the seat to the hem; the center back seam at the waist is subtle.
1 region
x 0.36 · y 0.20 · w 0.28 · h 0.70 (high) - Fabric appearanceSmooth, tightly woven fabric with a matte finish and minimal visible texture; fabric drapes straight with light natural folds behind the knees.
1 region
x 0.20 · y 0.16 · w 0.60 · h 0.70 (high) - Hem and fit at ankleStraight hems that fall to cover the tops of the dress shoes, creating a slim-straight silhouette through the leg.
1 region
x 0.26 · y 0.76 · w 0.48 · h 0.20 (high)
Other
Studio product shot with a plain light grey background; even soft lighting with minimal shadowing; image is vertically centered and cropped slightly above the waist and at the soles of the shoes.
- Background and lightingUniform light grey background with even studio lighting producing soft, diffuse shadows under the shoes.
- Props and stagingModel wearing black polished dress shoes and a tucked white top; only the lower legs, shoes, hands, and part of the tucked shirt are visible to frame the pants.
2 regions
x 0.34 · y 0.82 · w 0.32 · h 0.12 (high); x 0.36 · y 0.00 · w 0.28 · h 0.10 (high) - Shot compositionCentered vertical composition showing full rear leg length; image cropped slightly at top of the waistband and just below the shoe soles.
Colors
dark navy· main fabric (pants)#242B42black· back pocket buttons#0B0E1E- View and poseRear view of pants worn by a model with the waistband visible and the legs extending fully to the shoes; model's hands are visible at the sides and a tucked white shirt is partially visible at the top of the waistband.
Documents & Data
Customer Reviews
9 total9 reviews · out of 5
Pant
Nice, but drab
Taille commençant à 30.
Pas de grandeur en deçà de 30 donc trop grand !
Belle qualite
Content d’avoir trouvé!
nice pants
great fit. i probably won't hem them or at least hem myself if i do as when i have them professionally hemmed they get a smidge too short. but i can't find many pants that fit period so i'm very pleased.
Parfait!
Parfait!
Problème de pointure
Sur quatre pantalons commandés, tous étaient de taille 36. Deux, dont celui-ci, ne pouvaient pas être boutonnés à la taille tellement ils étaient petits. Les deux autres attachent parfaitement. À mon avis, il s'agit là d'un problème majeur.
Belle qualité du matériel, belle
Belle qualité du matériel, belle coupe de pantalon. Oui je le recommande.
Un classique
Belle teinte de marine. Coupe droite, pas trop ajustée. Taille conforme
B
B