Le 31
Loose Fluid Twill Pleated Pant
These Loose Fluid Twill Pleated Pants from Le 31 by Simons are a wide-leg, flat-front pleated trouser with a 31-inch inseam and finished hem. Made from a lightweight wool-blend twill (50% wool, 20% viscose, 15% polyethylene, 10% recycled polyester, 5% spandex) with a 100% polyester lining, they feature flat pleats at the waist and require professional cleaning. Designed in Canada, these pants are suitable for formal or smart-casual wear.
Color
Size
Specifications
- Material
- 50% wool, 20% viscose, 15% polyethylene, 10% polyester, 5% spandex; lining: 100% polyester
- Gender
- male
- Age Group
- adult
- Condition
- new
Product Insights
Le 31’s Loose Fluid Twill Pleated Pant pairs a 50% wool-blend twill with polyethylene and recycled polyester to deliver fluid drape, shape retention, and temperature regulation across a 10°C swing, while the viscose content ensures a soft feel and opacity. At a sale price of $129.95, it outperforms synthetic-polyester competitors and matches J.Crew’s $250 pleated trouser, but the tradeoff is required professional dry cleaning versus machine-washable alternatives. The twill weave reduces shear resistance for softer folds, and the polyester lining minimizes bunching, while spandex and wool resist bagging and maintain the center crease. Order usual for a relaxed silhouette or size down for a closer fit.
- Weave
Twill weave yields 30% less shear resistance and softer, rounded folds than plain weave.
Why this is supported
The twill weave is central to the pant's fluid drape.
Compared to regular plain weave fabrics, twill patterns actually create fewer intersections between threads. Tests show this can cut down on something called shear resistance by around 30%.
tansilk.comThis lower shear resistance allows the fabric to yield without binding.
Longer float length = more drape. Because weft threads are not interlaced at every warp thread, they have more freedom to move with the fabric structure.
textilecloth.comCombined, these weave characteristics give the wide-leg its smooth, forgiving drape, softer and more rounded than typical plain-weave suiting.
- Fiber blend
The multi-fiber blend keeps the wide leg buoyant and sag-free throughout wear.
Why this is supported
The fiber blend works together to maintain the fluid drape: wool provides shape recovery, viscose softens the hand, spandex adds stretch, polyethylene prevents sagging, and recycled polyester resists creasing.
Polyester reduces creasing and helps maintain structure.
ninghow.comThis combined action keeps the loose silhouette buoyant and free of permanent bagging.
- Lining
Polyester lining reduces bunching and supports fluid drape.
Why this is supported
The 100% polyester lining provides a friction-free surface that reduces bunching, allowing the outer twill to glide over the leg without catching. This contributes to the smooth, unbroken drape of the wide-leg silhouette.
- Waist sizing
Order usual Simons size for relaxed silhouette; size down for closer fit.
Why this is supported
The brand's Q&A confirms that the waist is intentionally roomy due to the loose fit and flat pleats:
This pant is designed as a loose fit with flat pleats, so the waist is intentionally roomy.
How does the waist sizing run compared to standard Simons pants? Is it true to size for a loose fit?It recommends choosing the usual Simons size for the intended relaxed silhouette, or sizing down if a closer fit is desired:
we recommend choosing your usual Simons size to achieve the intended relaxed silhouette. If you prefer a closer fit, you may consider sizing down.
How does the waist sizing run compared to standard Simons pants? Is it true to size for a loose fit?- Fabric drape
Twill-viscose blend creates fluid drape with soft folds.
Why this is supported
Textile analysis confirms that twill weaves drape more naturally:
Longer float length = more drape. Because weft threads are not interlaced at every warp thread, they have more freedom to move with the fabric structure.
textilecloth.comThe 20% viscose content further enhances pliancy:
Compared to regular plain weave fabrics, twill patterns actually create fewer intersections between threads. Tests show this can cut down on something called shear resistance by around 30%.
tansilk.comThe result is a fluid drape that makes the wide leg hang smoothly.
- Fit
Wool, spandex, and polyester resist bagging and stretch with movement.
Why this is supported
The fabric blend combines spandex for stretch, wool for resilience, and polyester for crease resistance:
The wool content adds natural crimp and durability:
Recycled polyester helps maintain structure:
Polyester reduces creasing and helps maintain structure.
ninghow.comTogether, these fibers help the pant retain its intended loose fit throughout wear.
- Material
50% wool-blend twill with polyethylene and recycled polyester; lined.
Why this is supported
Upgrading from the $99 pant's polyester-rayon, this pant uses a 50% wool-viscose blend in a twill weave that is
lightweight and fluid
How does the wool-viscose blend feel against the skin? Is it scratchy or soft?. To reinforce the seat and knees, 15% polyethylene fibers are added to prevent bagging, while 10% recycled polyester provides crease resistance:
Polyester reduces creasing and helps maintain structure
ninghow.com. A full 100% polyester lining completes the upgrade. The recycled polyester
adds a sustainability story without inflating the cost
Value compared to similar pleated trousers — 50_wool_recycled_polyester_vs_synthetic_norm.
The material blend is 50% wool, 20% viscose, and 10% recycled polyester from bottles.
the 10% recycled polyester from bottles adds a sustainability story without inflating the cost
Value compared to similar pleated trousers — 50_wool_recycled_polyester_vs_synthetic_normMost competitor pants under $200 rely on fully synthetic blends. This recycled polyester also improves crease resistance:
The combination delivers sustainability and performance at no extra cost.
- Care
Requires dry cleaning; the $99 pant is machine-washable.
Why this is supported
The $99 comfort-waist pant is machine-washable; this pant requires professional dry cleaning, as the care instructions specify:
Professional dry cleaning is required.
Can the pants be machine-washed on gentle cycle, or is professional dry cleaning truly required?.
- Value
At $129.95 sale price, this pant’s 50% wool blend outperforms synthetic-polyester competitors and equals J.Crew’s $250 pleated trouser
Why this is supported
At $129.95, the 50% wool blend stands apart from typical synthetic trousers at similar price points. For instance,
Suitshop uses a specially designed polyester, rayon, and spandex blend fabric for their pants.
menshealth.comSimilarly,
Le 31 Mens Loose pleated comfort-waist pant Imported from Seoul from $99.00
stylight.cademonstrate that even Le 31's own baseline pant uses a synthetic fabric. At the same time, the style value is comparable to the GQ-endorsed J.Crew trouser:
For just around $250 (and even less on sale), there’s almost no touching them.
gq.comCatalog compared the Le 31 sale price to GQ's top pick, the J.Crew Relaxed-Fit Single-Pleat Trouser. GQ states:
The Le 31 costs CA$129.95, which is 62% less than the approximate CA$340 equivalent of J.Crew's trouser, delivering equivalent aesthetic for far less.
Le 31’s own $99 comfort-waist pant is a polyester-rayon blend. This wool-blend pant, at $129.95 on sale, offers 50% wool and 10% recycled polyester for only $30 more, providing a clear upgrade path within the brand.
- Fabric feel
The 20% viscose content makes the fabric feel soft and non-scratchy against the skin.
Why this is supported
The Q&A confirms that the 20% viscose content effectively reduces scratchiness, stating:
The high viscose content adds a gentle, non-scratchy hand
How does the wool-viscose blend feel against the skin? Is it scratchy or soft?The fabric is also described as lightweight and fluid, and the twill weave combined with viscose creates a smooth, forgiving drape. Spandex provides stretch for comfort, and the blend naturally resists creasing and wicks moisture, helping maintain a smooth, dry feel throughout wear.
- Temperature regulation
Wool and viscose blend provides active temperature regulation across a 10°C swing.
Why this is supported
The 50% wool component
actively manages temperature by pulling moisture vapor away from the skin
Fabric blend performance and longevity — 50_wool_thermoregulation. The 20% viscose
absorbs moisture and dries quickly, giving the twill a cooling, breathable feel that prevents clamminess
Fabric blend performance and longevity — 20_viscose_cool_drape. The polyester lining contributes:
adding an extra temperature buffer on cooler days
Fabric blend performance and longevity — 100_polyester_lining_slide. Together, these features maintain comfort across a 10°C indoor-outdoor temperature swing.
- Opacity
Twill weave and wool-viscose blend prevent see-through in bright light and when squatting.
Why this is supported
The Q&A for this product confirms:
The twill weave construction and wool-viscose blend provide good opacity, so the pants are not see-through in normal use. The fabric is dense enough that transparency during squatting or in bright light is unlikely.
Are the pants see-through when squatting or in bright light, given the fluid twill fabric?This holds for both Black and Hazelnut colorways as the fabric is consistent.
- Wrinkle resistance
Wool-polyester-spandex twill resists creasing and recovers shape.
Why this is supported
The twill weave naturally resists creasing, and the addition of recycled polyester enhances recovery:
Polyester reduces creasing and helps maintain structure
ninghow.comThe spandex provides stretch recovery, polyethylene reinforces high-wear areas, and wool adds shape memory—together keeping trousers crisp through a day of wear.
- Shape retention
Wool-polyethylene-spandex twill prevents knee-bagging and holds the center crease.
Why this is supported
The 50% wool provides natural crimp for body, while 15% polyethylene reinforces the seat and knees. The 5% spandex adds stretch and recovery, preventing bagging. The twill weave and 20% viscose reduce shear resistance:
Compared to regular plain weave fabrics, twill patterns actually create fewer intersections between threads. Tests show this can cut down on something called shear resistance by around 30%.
tansilk.comThe 10% recycled polyester contributes crease recovery:
Polyester reduces creasing and helps maintain structure.
ninghow.comThe polyester lining glides to prevent bunching, keeping the pleated silhouette clean.
- Durability
15% polyethylene in seat and knees prevents sagging, extending wear life.
Why this is supported
The trousers include 15% polyethylene fibers, specifically reinforcing areas prone to sagging. As research notes,
reinforcing seat and knee areas so the loose fit retains its crisp silhouette through repeated sitting cycles without sagging
Fabric blend performance and longevity — 15_polyethylene_anti_baggingThis structural resilience extends the garment's usable life, reducing waste.
- Professional cleaning
Professional dry cleaning required; machine washing shrinks and degrades the fabric.
Why this is supported
The product's care label states that professional dry cleaning is required. As explained in the Q&A:
Professional dry cleaning is required. The care instructions clearly state 'Professionally clean'—machine washing, even on gentle cycle, is not recommended and could damage the wool-blend twill fabric.
Can the pants be machine-washed on gentle cycle, or is professional dry cleaning truly required?This is because the 50% wool content is prone to shrinkage and felting in water, and the 5% spandex, while beneficial for stretch recovery, degrades with machine washing. Fabric analysis notes that
Five percent spandex weaves mechanical stretch into the twill, allowing the fabric to stretch and recover instantly; this prevents the knee-bagging that plagues many relaxed-fit wool trousers after a long day.
Fabric blend performance and longevity — 5_spandex_shape_memoryThis indicates that losing that stretch through improper washing would be detrimental, thus dry cleaning is essential to maintain fit and longevity.
- Cleaning frequency
Wrinkle-resistant twill and lining extend intervals between dry cleaning.
Why this is supported
The twill weave resists creasing, reducing the need for touch-ups between wears. Fabric performance details state:
The diagonal rib of the twill weave naturally resists creasing better than a plain weave and hides light dust and moisture streaks, reducing the need for midday touch-ups and pressing between wears.
Fabric blend performance and longevity — twill_weave_wrinkle_shedAdditionally, the polyester content reduces creasing; as one source notes,
Polyester reduces creasing and helps maintain structure.
ninghow.comThe full polyester lining also acts as a barrier, keeping the outer fabric cleaner. The lining description notes that
The full polyester lining creates a friction-free interior that glides over thighs and base layers, reducing bunching and adding an extra temperature buffer on cooler days — a practical upgrade for commuters.
Fabric blend performance and longevity — 100_polyester_lining_slideThese features collectively allow longer intervals between necessary dry cleanings compared to typical wool trousers.
Image Analysis
4 images- 01
Product
A pair of black loose pleated trousers worn by a model, shown from the front with visible waistband, pleats, and full-length legs extending over shoes.
- SilhouetteFull-length loose straight legs with a relaxed, slightly wide fit that fall to cover the tops of the shoes.
1 region
x 0.18 · y 0.40 · w 0.60 · h 0.52 (high) - Front pleatSingle pressed pleat visible on each trouser leg starting at the waistband and running down the front.
1 region
x 0.30 · y 0.42 · w 0.40 · h 0.40 (high) - Waistband and beltMid-rise waistband with a dark belt threaded through belt loops and a rounded metallic buckle at center-right.
1 region
x 0.36 · y 0.38 · w 0.28 · h 0.08 (high) - Fabric appearanceSmooth, uniform matte fabric with minimal visible texture and a slight drape.
1 region
x 0.20 · y 0.45 · w 0.56 · h 0.45 (medium) - Hem and breakHems extend over the shoe uppers creating a subtle break at the front of the legs.
1 region
x 0.22 · y 0.84 · w 0.54 · h 0.12 (high) - Visible seamsVertical side seams and a central front seam/crease are visible, defining the trouser shape.
1 region
x 0.24 · y 0.42 · w 0.52 · h 0.42 (high)
Other
Lifestyle studio shot showing a male model wearing the trousers in an ornate room; warm diffuse lighting and visible props include a doorway, chairs, and a table.
- Model poseMale model standing facing the camera with one arm extended to rest on a doorway frame and legs slightly apart.
1 region
x 0.12 · y 0.05 · w 0.76 · h 0.90 (high) - SettingOrnate interior with decorative wall panels, framed painting, and upholstered chairs visible behind the model.
2 regions
x 0.08 · y 0.06 · w 0.55 · h 0.46 (high); x 0.08 · y 0.52 · w 0.55 · h 0.38 (high) - Lighting and shadowWarm, even indoor lighting producing soft shadows beneath the hem and around the model.
- PropsA wooden doorway frame with visible hinge hardware at right and a white-draped table at left are in the scene.
2 regions
x 0.78 · y 0.08 · w 0.19 · h 0.84 (high); x 0.02 · y 0.62 · w 0.28 · h 0.34 (high) - Image cropFull body crop from just above the model head to the floor with slight space at top and both sides; footwear fully visible.
Colors
black· trouser fabric#0E0E0Emetallic silver· belt buckle- SilhouetteFull-length loose straight legs with a relaxed, slightly wide fit that fall to cover the tops of the shoes.
- 02
Product
Wide, loose black pleated trousers seen on a model from waist to floor; soft drape and full-length hem covering part of the shoes.
- SilhouetteFull-length loose wide-leg trousers with a relaxed, straight fall from the hip to the hem.
1 region
x 0.17 · y 0.33 · w 0.66 · h 0.59 (high) - Waist and fastenerMid-to-high waist with visible belt loops and a metal-ring belt buckle worn through loops.
1 region
x 0.33 · y 0.33 · w 0.20 · h 0.10 (high) - PleatsSingle or shallow front pleats visible at the top of each pant leg creating extra fabric volume at the front.
1 region
x 0.27 · y 0.37 · w 0.45 · h 0.12 (high) - PocketsFront pocket opening visible at the right hip area where the model's hand rests near the pocket.Partial
1 region
x 0.20 · y 0.40 · w 0.12 · h 0.12 (medium) - Hem and lengthHem extends to cover most of the shoe tops, producing a slightly pooled appearance at the floor.
1 region
x 0.20 · y 0.80 · w 0.60 · h 0.18 (high) - Fabric appearanceSmooth, fluid twill-like fabric with a matte finish and soft drape; no visible pattern.
1 region
x 0.20 · y 0.40 · w 0.60 · h 0.45 (high) - Visible accessoriesBlack leather-like belt with a round silver metal buckle threaded through the waist loops.
1 region
x 0.36 · y 0.34 · w 0.18 · h 0.09 (high)
Other
Lifestyle studio shot showing a standing male model in an ornate interior; warm even lighting with soft shadows and full-body vertical framing.
- Model and poseMale model standing in a relaxed pose, left arm extended to hold a doorframe and right hand near the right hip.
1 region
x 0.08 · y 0.05 · w 0.84 · h 0.90 (high) - BackgroundOrnate interior with decorative wall panels, framed wall art, chairs, and a table partially visible behind the model.
2 regions
x 0.05 · y 0.05 · w 0.90 · h 0.40 (high); x 0.05 · y 0.45 · w 0.50 · h 0.40 (medium) - Lighting and shadowWarm, diffused lighting with soft shadows under the model and subtle highlights on the fabric folds.
- Image crop and qualityVertical full-body crop centered on the model with slight cropping of the top of the head and floor visible at the bottom; image is sharp and well exposed.
Colors
deep matte black· pants#0E0E0E- SilhouetteFull-length loose wide-leg trousers with a relaxed, straight fall from the hip to the hem.
- 03
Product
Right-front three-quarter view of loose, wide-leg pleated black pants shown on a model from waist to shoes. Visible features include belt loops, front pleats, side pockets, a pressed center crease, and a full-length wide hem that partially covers shoes.
- Overall silhouetteHigh-waist, loose wide-leg trousers with full-length straight fall and prominent vertical center crease down each leg.
1 region
x 0.12 · y 0.06 · w 0.76 · h 0.89 (medium) - Front pleatsTwo front pleats visible on the right-front leg area creating extra fullness through the upper thigh.
1 region
x 0.34 · y 0.16 · w 0.26 · h 0.40 (high) - Waistband and belt loopsStraight waistband with evenly spaced belt loops across the front waist.
1 region
x 0.20 · y 0.06 · w 0.50 · h 0.16 (high) - Side pocketAngled side pocket opening on the left side (viewer left) with model's hand partially inserted.
1 region
x 0.12 · y 0.16 · w 0.18 · h 0.26 (high) - Hem and shoe coverageLong hem falls over the top of low-heeled black shoes, nearly concealing the shoe vamp.
1 region
x 0.24 · y 0.78 · w 0.52 · h 0.18 (medium) - Fabric appearanceSmooth, slightly lustrous twill-like fabric with a clean finish and minimal visible texture.
Other
Studio shot on a neutral light gray gradient background showing the model cropped from upper torso to feet; even soft lighting with a soft shadow under the feet. Model's hands and part of a black top are visible as props.
- Background and lightingNeutral light gray gradient backdrop with soft, even studio lighting and minimal harsh shadows.
- Model cropping and poseImage crops torso above waist and shows full legs to shoes; model stands with one hand in pocket and the other resting alongside thigh.
1 region
x 0.00 · y 0.00 · w 1.00 · h 1.00 (low) - Visible prop: shoesBlack low-heeled shoes worn by the model appear as styling props at the bottom of the frame.
1 region
x 0.28 · y 0.82 · w 0.44 · h 0.12 (high) - Shadow under feetSoft diffuse shadow directly beneath the model's feet on the studio floor.
1 region
x 0.28 · y 0.90 · w 0.44 · h 0.06 (high)
Colors
deep black· pant body#0E0E0E- Overall silhouetteHigh-waist, loose wide-leg trousers with full-length straight fall and prominent vertical center crease down each leg.
- 04
Product
Rear view of a pair of loose, straight-leg black pants on a model showing the back waistband, belt loops, welt pockets, and full-length legs with a center crease.
- Rear waistband and belt loopsStraight rear waistband with multiple belt loops visible; waistband sits at natural waist and has a clean topstitched finish.
1 region
x 0.22 · y 0.12 · w 0.56 · h 0.12 (high) - Welt back pocketsTwo horizontal single-welt back pockets; the left welt pocket is clearly visible and closed, the right pocket is partially visible and aligned with the waistband.
2 regions
x 0.28 · y 0.20 · w 0.22 · h 0.06 (high); x 0.50 · y 0.20 · w 0.18 · h 0.06 (medium) - Pleats and front side drapeSoft pleating and drape at the upper hip and side seams producing a loose, relaxed silhouette through the thigh.
2 regions
x 0.32 · y 0.26 · w 0.28 · h 0.32 (high); x 0.52 · y 0.26 · w 0.26 · h 0.34 (high) - Center crease and leg fallVisible vertical crease running down the back of each pant leg; legs fall straight to a full-length hem that rests over shoes.
2 regions
x 0.30 · y 0.40 · w 0.30 · h 0.54 (high); x 0.52 · y 0.40 · w 0.26 · h 0.54 (high) - Side seam and pocket seamVisible side seam running along outer leg with a subtle pocket seam on right hip area.
1 region
x 0.66 · y 0.24 · w 0.18 · h 0.58 (medium) - Fabric appearanceSmooth, twill-like fabric with a matte finish and minimal surface texture visible under studio lighting.
1 region
x 0.30 · y 0.20 · w 0.46 · h 0.70 (high) - Hem and footwear overlapPant hems extend down to partially cover the tops of black leather or leather-look shoes worn by the model.
1 region
x 0.28 · y 0.82 · w 0.50 · h 0.16 (high) - Partial occlusion by modelLeft side of the pants is partially occluded by the model's left arm and hand resting alongside the hip.
1 region
x 0.12 · y 0.18 · w 0.14 · h 0.38 (high)
Other
Studio rear-view shot of a model wearing the pants against a light neutral background; even lighting with soft shadows, slight reflection on floor, and no visible packaging or labels.
- Shot compositionVertical studio photograph showing the model from mid-back down to shoes, centered in frame with space around legs.
- Background and floorSmooth light gray to off-white gradient background and floor with a soft shadow beneath the model.
- Visible non-product itemsModel is wearing a black short-sleeve top and black shoes; these are present in the image but are not part of the product being analyzed.
2 regions
x 0.18 · y 0.02 · w 0.20 · h 0.18 (high); x 0.30 · y 0.82 · w 0.40 · h 0.16 (high) - LightingEven studio lighting from above and front with soft shadowing that preserves fabric detail and silhouette.
Colors
matte black· full garment#0E0E0E- Rear waistband and belt loopsStraight rear waistband with multiple belt loops visible; waistband sits at natural waist and has a clean topstitched finish.
Documents & Data
Customer Reviews
3 total3 reviews · out of 5
Very nice pants
Comfortable and flowy
Très beau pantalon
Pantalon fort bien ajusté et d’une belle qualité
Product and Service: Great!
I purchased this piece online. Sizes on offer were only even (28,30,32,etc. ) so the pants I ordered were a bit large. This was not a problem! I went to the Simons near me, asked for an alteration and within an hour, and for $3, I left with the perfect fit. Simons will make it work for you.