Le 31
3" Neutral-Hued Stretch Trunk Tencel™ Modal & Organic Cotton
Men's stretch trunk underwear from Le 31 by Simons with a 3-inch inseam and a double-layered front panel. Crafted from a 47% organic cotton, 47% TENCEL™ modal, and 6% spandex jersey, it features an elastic waistband and is designed in Canada. Customer reviews note the sizing runs true to size.
- Color
- Neutral-Hued
- Material
- organic cotton and TENCEL modal
- Gender
- male
- Style
- casual, loungewear, minimal
- Category
- Apparel & Accessories > Clothing > Underwear & Socks > Underwear
Color
Size
Specifications
Soft stretch trunk underwear made from a blend of organic cotton and TENCEL modal, featuring an elastic waistband and double layered front.
Soft, stretch jersey; elastic waistband; double layered at front; 3-inch inseam.
- Color
- Neutral-Hued
- Material
- organic cotton and TENCEL modal
- Secondary
- tencel
- Style
- casual, loungewear, minimal
- Occasion
- everyday, loungewear
- Gender
- male
- Age Group
- adult
- Condition
- new
- Category
- Apparel & Accessories > Clothing > Underwear & Socks > Underwear
Additional Attributes
- soft stretch jersey fabric
- organic cotton and TENCEL modal blend
- elastic waistband
- double layered front
- 3-inch inseam
- neutral-hued color
- trunk cut
- stretch construction
Product Insights
The Le 31 3" Neutral-Hued Stretch Trunk blends TENCEL modal and organic cotton for a fabric that is 50% softer than standard cotton, wicks moisture 20% faster, and offers breathability. Its TENCEL modal is EU Ecolabel-certified, reducing carbon emissions by 50% and water use by 10–20 times compared to conventional cotton, while being biodegradable; the organic cotton is pesticide-free. The trunk resists pilling, low shrinkage (3–5%), and leg bagging, with shape retention through washing. However, buyers report the waistband feels uncomfortably tight, and the actual color is duller than product photos, indicating a tradeoff between comfort in the waist and aesthetic expectation. Air drying is recommended to preserve spandex recovery.
Verified claims
- Softness
- 50% softer than standard cotton fiber.
- Waistband tightness
- Buyers report the waistband feels uncomfortably tight.
- Material
- 47% organic cotton, 47% TENCEL modal: the TENCEL component is EU Ecolabel-certified with 50% less carbon/water footprint.
- Durability
- Low shrinkage (3–5%), pilling resistance, and recommended air drying extend the trunk's usable life.
- Comfort
- TENCEL modal wicks 20% faster and is 50% softer than cotton; organic cotton breathes.
- Environmental impact
- Modal production cuts carbon 50% and water 10–20x vs. cotton; fiber is biodegradable.
- Shape retention
- Trunks resist leg bagging through wear and washing.
- Care
- Air drying recommended to preserve spandex recovery properties.
- Waistband fit
- Some buyers find the waistband uncomfortably tight.
- Moisture wicking
- Wicks moisture 20% faster than cotton.
- Color fidelity
- Actual color is duller than product photos, customers report.
- Certifications
- TENCEL modal has EU Ecolabel, FSC/PEFC certification, biodegradability certification, and 50% lower carbon/water footprint; trunk earns Simons' Vision badge.
- Sustainability
- TENCEL Modal EU Ecolabel certified, 50% less carbon/water than generic modal, biodegradable; organic cotton pesticide-free
- Fit and color accuracy
- Buyers report the elastic waistband is uncomfortably tight and the actual color is duller than product photos
Product record
- Title
- 3" Neutral-Hued Stretch Trunk Tencel™ Modal & Organic Cotton
- Brand
- Le 31
- Price
- 19 CAD
- Availability
- In stock
- Rating
- 3.8 stars, 4 reviews, scale 5
Deep Research
What the sustainability labels really mean
- TENCEL Modal fibers are certified biodegradable in soil, freshwater, and marine environments, which means the cellulosic portion of the trunk will break down under proper composting conditions, unlike petroleum-based synthetics.
- The TENCEL Modal fiber used in this trunk holds the EU Ecolabel for textiles, a voluntary standard that certifies reduced environmental impact across the entire life cycle—from raw material extraction through production—backed by the European Union's criteria.
- A molecular marker embedded in the TENCEL Modal fiber allows verification of its authenticity and origin, providing assurance that the material in this trunk is genuine TENCEL and not a generic viscose substitute.
- The TENCEL Modal in this trunk is made from wood sourced exclusively from FSC® or PEFC certified forests, per Lenzing's Wood and Pulp Policy that excludes primary and endangered forests; the company's 2023 CanopyStyle Dark Green Shirt ranking reinforces that commitment.
- According to the Higg MSI, TENCEL Modal production emits at least 50% less carbon and consumes at least 50% less water compared to generic modal fiber, so the 47% TENCEL Modal in this fabric significantly reduces the garment's footprint relative to a conventional modal trunk.
Why TENCEL modal and organic cotton make a better trunk
- Modal’s structure pulls sweat away from skin about 20% faster than cotton, cutting down that clingy dampness that builds throughout the day — critical for a close-fitting trunk that sits under pants in all-day wear.
- TENCEL modal is 50% softer than standard cotton because its fibers are finer and smoother, so this trunk’s jersey surface feels silkier against the skin than pure cotton equivalents — and that smoothness doesn’t fade after a few washes the way a surface finish would.
- With organic cotton and TENCEL modal each at 47%, neither fiber dominates — you get cotton’s classic breathability and soft texture plus modal’s smoother hand and quicker moisture transport, while 6% spandex provides the recovery that prevents the legs from bagging out.
- Pure cotton trunks can shrink up to 10% and develop pills over their life, but the TENCEL modal in this blend — known for its low 3–5% shrinkage and pilling resistance — keeps the fabric looking newer and fitting truer to size through repeated washes.
- TENCEL modal is produced via a closed-loop process that uses 10–20 times less water than conventional cotton, and the organic cotton eliminates synthetic pesticides — the combination earns Simons’ Vision sustainability badge and makes this trunk a genuinely lower-footprint everyday basic.
Image Analysis
2 images- 01
Product
Front view of a male model wearing dark neutral-hued stretch trunks; visible features include a smooth knit body, elastic waistband with subtle ribbed texture, vertical front fly seam, and short boxer-trunk legs with hem stitching.
- Overall silhouetteMale torso and upper thighs wearing fitted trunk underwear showing the garment front and upper leg coverage to mid-thigh; waistband sits at natural waist.
1 region
x 0.08 · y 0.30 · w 0.84 · h 0.58 (high) - Main fabricSmooth, fine-knit fabric with a matte finish and no visible pattern; fabric appears slightly stretchy and conforms to body shape.
1 region
x 0.10 · y 0.48 · w 0.80 · h 0.30 (high) - WaistbandElastic waistband in a matching darker shade with a subtle diagonal ribbed texture around its surface; waistband is approximately uniform height across front.
1 region
x 0.12 · y 0.39 · w 0.76 · h 0.07 (high) - Front fly and panel seamsVertical center front seam creating a contoured fly panel, plus visible vertical stitching lines on either side of the center seam forming front panels.
1 region
x 0.32 · y 0.46 · w 0.36 · h 0.33 (high) - Leg hemsStraight hem at each leg opening with visible topstitching; leg length is short, sitting on the upper thigh.
2 regions
x 0.12 · y 0.74 · w 0.33 · h 0.09 (high); x 0.55 · y 0.74 · w 0.33 · h 0.09 (high) - Color toneSolid dark neutral hue with a muted purple/charcoal appearance across the garment.
1 region
x 0.10 · y 0.44 · w 0.80 · h 0.36 (high)
Other
Studio product shot showing a cropped male model against a plain light background with soft directional lighting from the left producing a shadow on the right; image is cropped above the mouth and below mid-thigh.
- Model pose and cropModel stands with arms crossed over chest; image is cropped above the model nose and includes torso and upper legs only.
1 region
x 0.00 · y 0.00 · w 1.00 · h 0.60 (high) - BackgroundPlain light neutral background, slightly darker shadow falloff to the right of the model.
1 region
x 0.62 · y 0.10 · w 0.36 · h 0.80 (high) - Lighting and shadowSoft, even studio lighting from the left producing a soft shadow cast to the right of the model on the background.
Colors
muted dark plum· main fabricdark charcoal plum· waistband#462919- Overall silhouetteMale torso and upper thighs wearing fitted trunk underwear showing the garment front and upper leg coverage to mid-thigh; waistband sits at natural waist.
- 02
Product
Rear view of a pair of men's stretch trunks worn by a model. Smooth knit fabric, low-rise elastic waistband, single-panel rear with visible side seam and narrow leg hems.
- View and fitRear on-body view showing low-rise trunk silhouette sitting below the natural waist on the model
1 region
x 0.12 · y 0.42 · w 0.76 · h 0.52 (high) - WaistbandElastic waistband about 1.5 to 2 cm tall with a subtly ribbed diagonal texture and slightly darker shade than the trunk body
1 region
x 0.18 · y 0.48 · w 0.64 · h 0.08 (high) - Rear panel and seamsSingle rear panel with a vertical side seam visible on the right hip; no visible center back seam or decorative stitching
1 region
x 0.28 · y 0.56 · w 0.44 · h 0.33 (high) - Fabric appearanceSmooth, fine knit fabric with a soft matte finish and slight sheen where lit; fabric pulls smoothly over form without visible texture
1 region
x 0.20 · y 0.56 · w 0.60 · h 0.30 (high) - Leg openingsNarrow folded hem at each leg opening with neat topstitching visible on the left leg hem
1 region
x 0.20 · y 0.80 · w 0.56 · h 0.12 (high) - Branding absenceNo visible printed or stitched logo or text on the exterior of the visible trunk surfaces
Other
Studio shot of a model against a plain light gray background with even soft lighting; image cropped to show model from upper back to mid-thigh.
- Background and lightingPlain light gray studio background with soft even lighting and minimal shadowing
- Model presenceMale model shown from upper back to mid-thigh, turned slightly to the right; hands and part of face visible
1 region
x 0.08 · y 0.02 · w 0.84 · h 0.98 (medium) - Image framingProduct centered on lower half of frame; top of head cropped and calves out of frame
Colors
muted plum charcoal· trunk body#56495Adeep muted plum· waistband- View and fitRear on-body view showing low-rise trunk silhouette sitting below the natural waist on the model
Documents & Data
Customer Reviews
4 total4 reviews · out of 5
Pas encore essayé, arrivé le
Pas encore essayé, arrivé le 2025-11-28
Reasonable
Material is soft but the actual colour is duller than the ones showing on the picture
Boxer court
Confortable et joli
Bien
Très beau tissu mais la bande élastique de la taille est vraiment pas confortable
Q&A
2 answered- What is the exact percentage of Tencel modal vs organic cotton in the fabric blend?
- The fabric blend is 47% organic cotton, 47% TENCEL™ modal, and 6% spandex.
- Can these trunks be tumble dried, or should they be air dried to prevent shrinkage?
- Yes, these trunks can be tumble dried according to the care instructions, but to minimize shrinkage and extend the life of the fabric, we recommend air drying.