
Le 31
3" Contrast-Seam Trunk Organic Cotton
Men's low-rise trunk underwear with a 3-inch inseam, made from a soft stretch organic cotton blend. It features an elastic waistband, double-layered front, and contrast stitching on the seams, available in black with light teal accents. Designed in Canada as a Le 31 by Simons exclusive, it has an average rating of 4.55/5 from 11 reviews.
- Material
- Soft stretch jersey in an organic cotton blend
- Gender
- male
- Style
- casual, loungewear
- Category
- Apparel & Accessories > Clothing > Underwear & Socks > Underwear
Color
Size
Specifications
Organic cotton trunk with contrast seams and a 3-inch inseam, designed for comfort.
Soft stretch jersey, elastic waistband, double layered front panel.
- Material
- Soft stretch jersey in an organic cotton blend
- Style
- casual, loungewear
- Occasion
- everyday, loungewear
- Gender
- male
- Age Group
- adult
- Condition
- new
- Category
- Apparel & Accessories > Clothing > Underwear & Socks > Underwear
Additional Attributes
- soft stretch jersey organic cotton blend
- elastic waistband
- double layered front panel
- contrast seams
- 3-inch inseam
- exclusive design from Canada
Product Insights
The Le 31 3" Contrast-Seam Trunk Organic Cotton offers a true-to-size fit that stays in place, with a short 3-inch inseam that exposes inner thighs—trading friction risk for cooling airflow. Contrast stitching and the short cut create a sporty look missing from longer, monochrome trunks, though the seam color may differ from photos. Cold-water washing and air drying prevent shrinkage, while tumble-drying can cause up to 10% shrinkage. At $19, it competes with 3-pack unit prices from Quince and Danish Endurance, and as a Simons-exclusive Canadian design, its contrast seams set it apart from DTC brands.
Verified claims
- Fit
- Buyers report a true-to-size fit that stays in place without riding up.
- Shrinkage
- Cold-water washing and air drying keep shrinkage to the typical 3–5% first-wash range and help preserve the trunk's contoured fit.
- Inseam
- The 3-inch inseam is shorter than most and leaves inner thighs exposed.
- Inner thigh coverage
- Short 3-inch cut exposes inner thighs, trading friction risk for cooling airflow.
- Contrast seams
- Contrast stitching and a 3-inch inseam create a sporty look that longer, monochrome trunks lack.
- Color accuracy
- Contrast seam color may differ from photos; buyers advise trusting written descriptions.
- Care
- Wash cold and air-dry; tumble-drying can cause up to 10% shrinkage.
- Value
- $19 per pair is competitive with 3-pack unit prices from Quince and Danish Endurance.
- Brand identity
- Contrast seams and Canadian design (Simons exclusive) set it apart from DTC brands.
- Design
- Le 31 is a Simons-exclusive label designed in Canada.
- Waistband retention
- Air drying after washing helps the elastic waistband keep its grip and prevents the fabric from bagging or losing recovery over time.
- Front panel
- The double-layered front panel adds modesty and a bit of structure rather than heavy support; it creates a slightly thicker panel but avoids the fit variability sometimes associated with shaped pouches.
- Softness
- The organic cotton fibers feel softer than conventional cotton because they undergo fewer finishing treatments, and cold-water washing preserves that plushness.
- Stretch
- The stretch jersey fabric offers some give for a snug, comfortable fit.
Product record
- Title
- 3" Contrast-Seam Trunk Organic Cotton
- Brand
- Le 31
- Price
- 19 CAD
- Availability
- In stock
- Rating
- 4.55 stars, 11 reviews
Image Analysis
2 images- 01

Product
Front view of a male model wearing black trunk-style underwear with contrast light-blue stitching and a black elastic waistband edged in light blue.
- Overall silhouetteLow-rise trunk cut fitted on a male model, covering upper thighs and groin area with a contoured front pouch visible.
1 region
x 0.12 · y 0.48 · w 0.76 · h 0.38 (high) - Fabric colorMain body fabric appears solid black across the trunk panels.
1 region
x 0.18 · y 0.62 · w 0.64 · h 0.24 (high) - Contrast seamsProminent narrow contrast stitching in a pale blue/teal color runs vertically at center front and along curved panel seams on both sides of the pouch and down the outer thigh seams.
3 regions
x 0.40 · y 0.62 · w 0.08 · h 0.22 (high); x 0.23 · y 0.62 · w 0.12 · h 0.22 (high); x 0.65 · y 0.62 · w 0.12 · h 0.22 (high) - WaistbandWide black elastic waistband with a thin pale blue top edge trim matching the contrast seams; waistband has a smooth matte finish.
1 region
x 0.18 · y 0.55 · w 0.64 · h 0.08 (high) - Hem finishLeg openings have a narrow folded hem in the same black fabric with no visible elastic casing.
1 region
x 0.20 · y 0.84 · w 0.60 · h 0.06 (high)
Other
Studio-front product shot on a plain light gray to white background showing a cropped male model from chin to upper thighs with even soft lighting and minimal shadows.
- Model croppingImage shows a male torso cropped slightly above the chin and down to mid-thigh, model facing forward.
1 region
x 0.05 · y 0.00 · w 0.90 · h 1.00 (high) - Background and lightingPlain neutral light gray to white background with soft, even studio lighting and faint shadowing at the sides.
- Hands and poseModel stands with arms relaxed at sides; both hands partially visible with right hand nearer to camera.
2 regions
x 0.05 · y 0.58 · w 0.18 · h 0.34 (high); x 0.77 · y 0.66 · w 0.18 · h 0.28 (high)
Colors
black· main fabric#0E0C0Fpale teal blue· contrast stitching and waistband edge- Overall silhouetteLow-rise trunk cut fitted on a male model, covering upper thighs and groin area with a contoured front pouch visible.
- 02

Product
Rear view of a male model wearing black low-rise trunks with visible contrast vertical seams on each side and a thin contrasting stripe along the top edge of the waistband.
- Overall shapeLow-rise short trunk silhouette with snug fit around hips and upper thighs, full rear coverage to the top of the thighs.
1 region
x 0.08 · y 0.57 · w 0.84 · h 0.33 (high) - Main fabricMatte knit black fabric with smooth, slightly elastic appearance and no visible pattern.
1 region
x 0.12 · y 0.61 · w 0.76 · h 0.28 (high) - Contrast vertical seamsSingle vertical contrast seam on each side of the rear panel running from waistband to leg hem, stitched in a light bluish-gray thread.
2 regions
x 0.13 · y 0.64 · w 0.06 · h 0.22 (high); x 0.81 · y 0.64 · w 0.06 · h 0.22 (high) - WaistbandElastic black waistband with a thin contrasting horizontal stripe at the top edge in the same light bluish-gray color as the side seams; small vertical stitch at center back where waistband joins.
2 regions
x 0.12 · y 0.56 · w 0.76 · h 0.04 (high); x 0.49 · y 0.56 · w 0.02 · h 0.03 (medium) - Leg openingsNarrow folded hem at leg openings creating a slightly thicker edge finish, matching the black body fabric.
1 region
x 0.12 · y 0.83 · w 0.76 · h 0.05 (high) - Center back seamSubtle center back seam visible along the model's spine through the fabric, running vertically down the rear panel.
1 region
x 0.46 · y 0.60 · w 0.08 · h 0.21 (medium)
Other
Studio product shot of a male model from behind against a plain white background, cropped near the neck and mid-thigh, with even soft lighting and minimal shadow.
- Shot compositionRear-facing model centered in frame, image cropped at the base of the neck and mid-thigh so focus is on the trunks and lower back.
1 region
x 0.00 · y 0.00 · w 1.00 · h 1.00 (high) - Background and lightingUniform white background with soft, even studio lighting producing minimal cast shadows and neutral color rendering.
- Model presenceMale model visible from the rear including shoulders, back, arms, and upper legs; no additional props or garments visible.
1 region
x 0.06 · y 0.04 · w 0.88 · h 0.92 (high) - Image crop detailTop of the head and lower legs are outside the frame; trunks and lower back are fully visible.
Colors
black· main fabric#0E0C0Flight bluish-gray· contrast seamslight bluish-gray· waistband stripe- Overall shapeLow-rise short trunk silhouette with snug fit around hips and upper thighs, full rear coverage to the top of the thighs.
Documents & Data
Customer Reviews
11 total11 reviews · out of 5
Boxer
Parfait pour dormir. Pas trop serré et ne remonte pas.
Belle qualité
Durable ,belle couleur
Boxeur court
Qualité moyenne et pas très confortable
Confortable
Bien ajusté au corps
Looks good
Well designed and looks superb
Un boxeur qui a du punch!
Que du confort!
Tissus avec moins de corps
Memechose
Super
Super
Colours
I recommend these. Great product, but for the colours, trust the description more than the photos.
Excellent Quality
I love the fit and feel of these!
Magnifiques
Super beaux et confos!