Le 31
3" Solid Breathable Trunk Lenzing™ Ecovero™ Viscose
This is a men's low-rise trunk style underwear crafted from LENZING™ ECOVERO™ viscose jersey, a soft and breathable fabric made from certified renewable wood sources. It features an elastic waistband, double-layered front pouch, and a 3-inch inseam. The garment has tone-on-tone stitching and a matte knit finish, providing a fitted, close-to-body cut.
Color
Size
Specifications
- Material
- 92% LENZING™ ECOVERO™ viscose, 8% spandex
- Gender
- male
- Age Group
- adult
- Condition
- new
Product Insights
Le 31's 3-inch solid trunk uses 92% LENZING ECOVERO viscose and 8% spandex for a light, smooth feel with 4-way stretch that stays in place during activity via a 3-inch inseam, balanced leg openings, and an encased waistband that prevents chafing and rolling. The double-layer front and covered waistband retain shape, prevent sheerness, and stop irritation, while the fabric absorbs moisture, dries quickly, and stays cool and non-clingy. It carries OEKO-TEX Standard 100 certification for skin safety, and the fiber holds EU Ecolabel, FSC/PEFC, Canopy Dark Green, and OEKO-TEX 100 certifications, using 50% less water and half the CO₂ of generic viscose and being certified biodegradable with full supply chain traceability via molecular marker. The main tradeoff: sizing true to size but sizing up if between sizes for thigh comfort, and cold-water wash/air-dry is required to preserve fit and prevent sagging.
Verified claims
- Sizing
- True to size; size up if between sizes for comfort around thighs.
- Stay-put
- 3-inch inseam and balanced leg openings keep trunks in place during activity.
- Fabric feel
- 92% LENZING ECOVERO viscose/8% spandex provides a light, smooth feel with 4-way stretch that moves with the body without squeezing.
- Design
- Double-layer front and covered waistband retain shape, prevent sheerness, and stop irritation and rolling.
- Moisture management
- Fabric absorbs moisture and dries quickly, staying cool and non-clingy.
- Skin safety
- Fabric carries OEKO-TEX Standard 100 certification, ensuring it is free of harmful substances.
- Care
- Cold-water wash and air-dry preserve fit and prevent sagging.
- Certifications
- Fiber holds EU Ecolabel, FSC/PEFC, Canopy Dark Green, OEKO-TEX 100
- Environmental impact
- 50% less water and half the CO₂ of generic viscose; certified biodegradable
- Traceability
- Molecular marker ensures full supply chain traceability from forest to garment
- Market trust
- Used by over 500 global brands
- Fit retention
- 3-inch inseam, classic leg opening, and double-layer front prevent ride-up and bunching.
- Durability
- Cold washing and double-layer front prolong shape retention and support.
- Shape retention
- Stretch recovery and double-layer front prevent sagging throughout the day.
- Fit stability
- Leg opening, 3-in inseam and encased waistband keep the trunk in place.
- Waistband
- Encased elastic waistband with no exposed branding prevents chafing and lies flat.
- Front panel
- Double-layer front panel provides opacity and maintains pouch shape over time.
- Fit and shape
- 3 inseam and classic leg cut anchor the trunk; stretch fabric recovers shape.
- Material
- Breathable LENZING ECOVERO jersey wicks moisture; OEKO-TEX certified for sensitive skin.
- Stretch and recovery
- Four-way stretch snaps back after movement, avoiding cotton sag and up-creep.
- Fabric comfort
- ECOVERO viscose feels lighter, more fluid, and manages moisture to stay non-clingy.
- Front shaping
- Double-layer front prevents sheerness and adds shaping support.
Product record
- Title
- 3" Solid Breathable Trunk Lenzing™ Ecovero™ Viscose
- Brand
- Le 31
- Price
- 20 CAD
- Availability
- In stock
Image Analysis
2 images- 01
Product
Front view of a male model wearing a pair of black fitted trunk-style underwear showing waistband, front pouch seam, and leg openings.
- Overall silhouetteLow-rise trunk silhouette sitting below the model's natural waist with short leg length and a fitted close-to-body cut.
1 region
x 0.18 · y 0.58 · w 0.64 · h 0.30 (high) - WaistbandSmooth, elasticated waistband of the same black color as the body fabric, approximately uniform width and unstated visible branding.
1 region
x 0.18 · y 0.55 · w 0.64 · h 0.06 (high) - Front pouch and seamsContoured front pouch formed by a vertical center seam and curved stitching that defines the pouch area; seams are tonal and lie flat against fabric.
1 region
x 0.34 · y 0.64 · w 0.32 · h 0.20 (high) - Leg openings and hemShort, straight-cut leg openings with narrow folded hems and visible topstitching around the hemline.
1 region
x 0.20 · y 0.78 · w 0.60 · h 0.08 (high) - Fabric finishMatte, smooth knit fabric with no visible texture pattern and minimal sheen under studio lighting.
1 region
x 0.22 · y 0.62 · w 0.56 · h 0.24 (high) - Visible stitchingTone-on-tone stitching visible along waistband attachment, center pouch seam, and leg hems; thread matches fabric color.
1 region
x 0.24 · y 0.62 · w 0.52 · h 0.28 (high)
Other
Studio-shot cropped portrait of a male model from neck to mid-thigh against a neutral light-gray gradient background with soft, even lighting.
- Model pose and framingMale model stands facing forward with arms relaxed at sides; image cropped at neck and mid-thigh so only torso and upper legs are visible.
1 region
x 0.00 · y 0.00 · w 1.00 · h 1.00 (high) - BackgroundEven light-gray gradient backdrop, slightly darker at outer edges and lighter near center behind the model.
- Lighting and shadowSoft, diffuse studio lighting producing gentle shadows under the model and subtle highlights on skin; no harsh specular highlights on the fabric.
- Image cropCentered composition with symmetry around the vertical midline; top of head cropped out of frame.
Colors
deep black· main fabric and waistband#0E0E0E- Overall silhouetteLow-rise trunk silhouette sitting below the model's natural waist with short leg length and a fitted close-to-body cut.
- 02
Product
Rear view of a male model wearing solid black trunk-style underwear. Visible features include a flat elastic waistband, vertical center-back seam, smooth matte stretch fabric, and stitched leg hems.
- Silhouette and viewRear-facing trunk silhouette with mid-rise waistband and short leg length; garment covers the buttocks and upper thighs.
1 region
x 0.12 · y 0.58 · w 0.76 · h 0.28 (high) - WaistbandFlat elastic waistband about one seam-width tall, same color as the body fabric, sits horizontally across lower back.
1 region
x 0.12 · y 0.52 · w 0.76 · h 0.08 (high) - Center-back seamSubtle vertical seam running down the center of the rear panel from the waistband toward the crotch area.
1 region
x 0.47 · y 0.56 · w 0.06 · h 0.22 (high) - Leg hemsNarrow stitched hem finishing the leg openings on both thighs with flat, even stitching visible at each leg edge.
2 regions
x 0.20 · y 0.78 · w 0.20 · h 0.10 (high); x 0.60 · y 0.78 · w 0.20 · h 0.10 (high) - Fabric appearanceSmooth, tightly knit matte fabric with slight surface stretch and even color; no visible pattern or texture.
1 region
x 0.12 · y 0.58 · w 0.76 · h 0.28 (high) - Faint markingFaint embossed or printed marking at the upper center rear of the waistband panel; characters not legible in this image.Partial
1 region
x 0.47 · y 0.60 · w 0.06 · h 0.03 (medium)
Other
Studio rear-product shot on a neutral gradient gray background showing the model from head-top crop to upper thighs; soft, even lighting with minimal shadows.
- Shot compositionCentered rear-facing crop showing model from just above the shoulders to mid-thigh; model stands straight with arms relaxed at sides.
- BackgroundSmooth light gray gradient background that is brighter at center and darker at edges.
- Lighting and shadowSoft, even studio lighting producing gentle highlights on the shoulders and minimal hard shadows.
- Image qualityHigh-resolution, well-focused image with clear detail and even color rendering.
- Head cropTop of the model's head is cropped out of the frame.
1 region
x 0.28 · y 0.00 · w 0.44 · h 0.14 (high)
Colors
matte black· body#141414- Silhouette and viewRear-facing trunk silhouette with mid-rise waistband and short leg length; garment covers the buttocks and upper thighs.
Documents & Data
Customer Reviews
51 total51 reviews · out of 5
Boxeur
Très confortable
Mon préféré!
Super confortable!
Joli
Tres difficile à faire sécher….plus d un jour à l air naturel
je recommande cet article
je recommande cet article
Boxeur
Le boxeur bleu la grandeur n’était pas exactement un médium comme décrit dans le boxeur , on aurait du inscrire petit car les autres couleurs était exacte
boxeur viscose
Belle qualité
Baisse de qualité
Je m'ennuie de ceux en bambou ou en coton qui etaient beaucoup plus ferme. Ceux-ci sont moins confortable et offrent moins de soutien que les ancien modèles.
Tissu de mauvaise qualité, un
Tissu de mauvaise qualité, un lavage et cela fait plein de moumoute
Simple et efficace
Joli et confortable
Très satisfait
Très satisfait
BONNE ACHAT TRES CONFORTABLE
BONNE ACHAT TRES CONFORTABLE
C est ok
C est ok
J'apprécie le tissu et la
J'apprécie le tissu et la coupe
parfait
parfait
Matériel
Faible soutien
Beau boxeur
Belle couleur. Pour le bas de Noël à mon fils.
Great product
Great product
What not to like ?
Soft fabric, good price, holds everything in place, elastic is not the "strangler" type (which I hate).
Boxeur
Confortable
Parfait
Parfait
very comfortable
My husband is very happy with his new briefs, he find them very smooth and comfortable
Beau boxeur.
Belle qualité et belle couleur.
My husband’s favorite underwear
By far his favorite underwear. Loves the fabric and fit
Confort
Composition et longueur parfaites
Not great, but decently comfortable!
The fabric looks cheap. . but it’s comfy!
Less comfortable than the blue
Less comfortable than the blue one I had bought before and loved
Boxer
J’aurais. Aime plus de soutien
Fit and look great!
These are very soft and fit very great. Love the hot colour and the look.
Parfait, tel que requis. Merci
Parfait, tel que requis. Merci
Bon achat
Confortable
Beau tissus
Attrayant
so soft and the band
so soft and the band does not dig into the skin
Comfy and a great colour
Using them for an upcoming photoshoot
flashy
je trouve l'élastique de la taille un peu large
different colours, usual pants
suite me fine -
Good pair
Exactly what I wanted. True to size
doux & confortable
doux & confortable
Confortable.
Le boxeur est très confortable et était à rabais.
Perfect Underwear
Fit true to size but comfortable and not hot.
Différent de ce que l'on
Différent de ce que l'on montre.
aimes bien ce confort
aimes bien ce confort
Simple et efficace
Boxer confortable et joli
Parfait
Doux, soyeux et minces!
Good Quality
Very comfortable fit and well made.
Men’s trunk
Just what I hoped for
le boxeur court
excellent oui je le recommande
Très bon soutien
Mon favori
A nice replacement to the Bamboo trunk
Bought as replacements to the previously made 'SOLID BAMBOO TRUNK' the fit is the same which is great, but I am unsure how they will measure up over the year of washing.
Tres bon boxeurs
Ils me vont a merveille et de tres bonne qualiter!
Confortable
Mon conjoint les adorent…
Ok
Ok