
Le 31
Bird's-Eye Knit Washable Pant Straight Fit
The Bertini et Le 31 Bird's-Eye Knit Washable Pant is a straight-fit trouser in a navy-and-black knit with a semi-plain bird's-eye pattern. It features a concealed elastic waistband, five-pocket styling, and a finished hem with a 33-inch inseam. Constructed from stretch viscose-polyester knit, the pants are machine washable for easy care.
- Color
- Navy and black
- Material
- Stretch viscose-polyester knit
- Category
- Apparel & Accessories > Clothing > Pants
Color
Size
Specifications
Navy-and-black knit pants with straight fit and concealed elastic waistband, made from stretch viscose-polyester.
Bird's-eye knit texture, straight fit, 5-pocket design, machine washable
- Color
- Navy and black
- Material
- Stretch viscose-polyester knit
- Gender
- male
- Age Group
- adult
- Condition
- new
- Category
- Apparel & Accessories > Clothing > Pants
Additional Attributes
- Bird's-eye knit texture
- Elegant semi-plain finish
- Straight fit
- Concealed elastic waistband
- 5-pocket design
- Stretch viscose-polyester knit
- Machine washable
- Finished hem
- 33-inch inseam
Product Insights
Le 31's Bird's-Eye Knit Washable Pant is a $89 CAD entry-level tailored straight fit that runs trim, so sizing up improves comfort. The polyester-viscose-spandex knit is thinner than dress trousers but wrinkle-resistant, machine-washable, and breathable via micro-openings. A concealed elastic waistband provides stretch and a smooth front, enabling beltless tucking or casual wear. The navy-black mélange reads as near-solid, pairing with black or navy, while the straight leg works with sneakers or dress shoes. The tradeoff is a lighter fabric that sacrifices traditional trouser weight for cool, fast-drying, low-maintenance versatility.
Verified claims
- Sizing
- The straight fit runs tight on most buyers; sizing up improves comfort.
- Value
- At $89 CAD, this pant is Le 31's entry-level tailored option.
- Fabric
- Thinner than traditional trousers; stays cool and dries fast, buyers note.
- Breathability
- Better airflow than standard trousers via knit's micro-openings.
- Wrinkle resistance
- Stretch viscose-polyester knit resists wrinkles exceptionally well.
- Texture
- Subtle raised-dot pattern appears semi-plain at distance and micro-textured up close.
- Material
- The polyester-viscose-spandex blend makes these pants thinner than dress trousers yet wrinkle-resistant and machine washable.
- Formality range
- Casual jeans-style, but bird's-eye texture and mélange allow dressing up; machine-washable.
- Waistband flexibility
- Concealed elastic waistband allows tucking without a belt or clean look with a belt.
- Stretch comfort
- Concealed elastic gives inches of stretch for a forgiving fit and all-day comfort with a tailored front.
- Concealed elastic design
- Elastic is channeled internally so the front lies smooth, enabling beltless tucking and a cleaner look.
- Machine washability
- Machine-washable across entire tailored pant range
- Drying instructions
- Tumble drying on low is safe; air drying flat preserves shape
- Wash durability
- Resists pilling and fading while maintaining softness after washing
- Fit
- Runs trim, size up; stretch fabric and elastic waistband offer comfort, but knit is lighter than typical.
- Care
- Machine-washable knit resists pilling and fading, retaining shape.
- Shoe pairing
- Uniform straight leg pairs with both sneakers and dress shoes without bunching.
- Versatility
- Navy-black mélange reads as a near-solid, pairing with both black and navy without clashing.
- Styling
- Straight fit works with sneakers and derbies, enabling monochromatic looks from casual to dressy.
- Design details
- Five-pockets and concealed elastic waistband allow polished tuck-in or casual wear.
Product record
- Title
- Bird's-Eye Knit Washable Pant Straight Fit
- Brand
- Le 31
- Price
- 89 CAD
- Availability
- In stock
Image Analysis
3 images- 01

Product
Male model wearing straight-leg dark charcoal knit pants with a black belt, paired with a light blue short-sleeve polo and black leather dress shoes. The image shows a full-body frontal three-quarter pose with the model's left hand in the front pocket.
- Pant silhouetteStraight-leg trousers with a narrow but not tapered lower leg, front rise seam visible, natural crease faintly visible along the front of each leg
1 region
x 0.30 · y 0.35 · w 0.40 · h 0.55 (high) - Pant fabric textureFine knit or jersey appearance with a smooth, slightly heathered surface and minimal sheen
1 region
x 0.33 · y 0.45 · w 0.34 · h 0.38 (medium) - Waistband and beltMid-rise waistband with belt loops and a black rectangular-buckled belt threaded through loops
1 region
x 0.38 · y 0.33 · w 0.24 · h 0.10 (high) - PocketsFront slash pockets; model's left hand inserted in right-side front pocket (viewer left), pocket opening visible at hip
1 region
x 0.47 · y 0.36 · w 0.15 · h 0.14 (high) - Hem and fit at anklePant hems fall straight over the shoes with slight break at the front; no visible cuff
1 region
x 0.28 · y 0.80 · w 0.44 · h 0.18 (high) - Visible upper garmentLight blue short-sleeve polo with a three-button placket and a soft knit texture, tucked into the waistband
1 region
x 0.33 · y 0.08 · w 0.34 · h 0.30 (high) - FootwearBlack leather dress shoes with rounded toe and low heel, laced closure, worn with dark socks
1 region
x 0.26 · y 0.88 · w 0.50 · h 0.10 (high)
Other
Studio shot with plain light gray to white gradient background, soft diffuse lighting, and subtle shadow beneath shoes; model posed three-quarter front with slight head tilt.
- Shot compositionFull-body studio portrait centered vertically with the model slightly offset to the right of center, captured from a slightly elevated frontal angle
- BackgroundSmooth light gray to off-white gradient backdrop with no props or visible seams
- Lighting and shadowsEven, diffuse lighting with soft shadow cast under the shoes and slight highlights on the model's face and shoulders
- Model poseModel stands with weight on left leg, right leg slightly forward, left hand in pocket and right arm relaxed at side; head slightly tilted toward viewer left
1 region
x 0.30 · y 0.10 · w 0.40 · h 0.85 (high)
Colors
dark charcoal· pants#2D2D31light blue· polo#85A4C9black· belt#121215black leather· shoes#0D0D0E- Pant silhouetteStraight-leg trousers with a narrow but not tapered lower leg, front rise seam visible, natural crease faintly visible along the front of each leg
- 02

Product
Front view of a pair of straight-leg knit pants in a dark charcoal color showing waistband, front pockets, fly, and full-length legs down to the hem over dress shoes.
- Waistband and belt loopsVisible waistband with multiple belt loops and a single button closure at center front above the fly.
1 region
x 0.28 · y 0.08 · w 0.44 · h 0.12 (high) - Button and flySingle dark round button at the top of a centered fly; fly seam visible beneath the button.
1 region
x 0.43 · y 0.12 · w 0.14 · h 0.18 (high) - Pocket configurationClassic five-pocket styling: two front pockets with a small coin pocket on the right front, pocket openings visible at the hips.
2 regions
x 0.31 · y 0.16 · w 0.20 · h 0.18 (high); x 0.49 · y 0.16 · w 0.20 · h 0.18 (high) - Fabric textureFine knit texture with a subtle bird-eye or micro-pattern visible on the pant surface, giving a slightly heathered look up close.
1 region
x 0.30 · y 0.20 · w 0.40 · h 0.60 (medium) - Leg silhouetteStraight-leg silhouette with a consistent width from thigh to hem, legs falling straight and covering part of the shoe tops.
1 region
x 0.20 · y 0.25 · w 0.60 · h 0.65 (high) - Hem and fit at shoesSimple straight hem that reaches over the front of the shoes, minimal break at the front hem.
1 region
x 0.22 · y 0.78 · w 0.56 · h 0.18 (high)
Other
Studio shot showing a model from mid-torso to feet against a neutral light-gray background with soft even lighting; model hands rest alongside the legs and black dress shoes are visible.
- Model visiblePortion of a model shown from just above the waist to the feet, including both hands positioned beside the thighs.
1 region
x 0.10 · y 0.02 · w 0.80 · h 0.96 (high) - Footwear in shotBlack polished dress shoes worn by the model are visible at the bottom of the frame.
1 region
x 0.15 · y 0.82 · w 0.70 · h 0.16 (high) - Background and lightingEven, soft studio lighting on a seamless light-gray background producing minimal shadows and neutral color rendering.
Colors
dark charcoal· pants fabric#212225- Waistband and belt loopsVisible waistband with multiple belt loops and a single button closure at center front above the fly.
- 03

Product
Rear view of a pair of dark charcoal knit straight-fit pants on a model showing waistband, belt loops, back pockets, and full-length straight legs with slight taper and natural creasing at the knees and hem.
- View and fitRear-on view of pants worn by a model; straight leg silhouette with a slight taper toward the hem and a smooth seat fit.
1 region
x 0.08 · y 0.08 · w 0.84 · h 0.87 (high) - Waistband and belt loopsMid-rise waistband with visible belt loops evenly spaced across the back waist.
1 region
x 0.20 · y 0.06 · w 0.60 · h 0.12 (high) - Back pocketsTwo back pockets: left appears as a slit/welt pocket and right as a patch-style pocket with visible topstitching.
2 regions
x 0.40 · y 0.20 · w 0.24 · h 0.18 (high); x 0.18 · y 0.20 · w 0.22 · h 0.18 (medium) - Seams and stitchingVisible side seams and topstitching around the pockets and waistband; stitching matches fabric color.
1 region
x 0.12 · y 0.18 · w 0.76 · h 0.68 (high) - Fabric textureFine knit texture with a subtle bird's-eye or heathered appearance visible on close inspection of the pant surface.
1 region
x 0.30 · y 0.30 · w 0.40 · h 0.50 (medium) - Hem and lengthFull-length hem rests on top of dress shoes with a small break; hem is plain with no visible cuff.
1 region
x 0.10 · y 0.76 · w 0.80 · h 0.18 (high) - Visible text or logosNo visible brand logos or printed text on the pants surface in this view.
Other
Studio shot showing a model from the rear against a plain light grey background; part of a blue top and black dress shoes are visible. Even soft lighting with mild shadows near feet; no packaging present.
- Background and stagingUniform light grey studio background and floor with the model standing; no props or packaging visible.
- Model and stylingModel is wearing a blue top tucked into the waistband and black dress shoes; model's hands are placed in front pockets creating natural hip posture.
2 regions
x 0.18 · y 0.00 · w 0.64 · h 0.20 (high); x 0.20 · y 0.82 · w 0.60 · h 0.18 (high) - Lighting and shadowsSoft, diffuse lighting with mild shadowing along the inner leg creases and under the shoes.
- Image quality and cropSharp focus on pants with full rear view from waist to shoes; slight cropping at top of model's torso.
Colors
dark charcoal· pants body#2A2A2D- View and fitRear-on view of pants worn by a model; straight leg silhouette with a slight taper toward the hem and a smooth seat fit.
Documents & Data
Customer Reviews
4 total4 reviews · out of 5
Pantalon
Parfait et léger
Love love these pants!
My husband loves his pants like this! A very nice trim fit. Very comfortable with the stretch but also very sharp and dressy looking! Fits a little on the small side. Ordered the next size up than we usually get and it’s perfect.
pants
A bit tighter than other pants but very nice material and length
Nice pant
The material isn't very thick, I was surprised by that. Definitely seem like they would have run tight. Due to other reviewers, I ordered a size up. It was almost too big for him but they'll do.