
Lacoste
2" Onyx Stretch Trunk Cotton
The Lacoste 2" Onyx Stretch Trunk Cotton is a men's trunk-style underwear with a 2-inch inseam. It is made from a soft jersey stretch cotton blend and features an elastic waistband with a double-layered front for support. The design includes a contoured front pouch and a repeating white crocodile logo pattern on a black background.
- Color
- Onyx
- Material
- stretch cotton blend
- Gender
- male
- Category
- Apparel & Accessories > Clothing > Underwear & Socks > Underwear
Color
Size
Specifications
Men's stretch cotton trunk with soft jersey fabric, elastic waistband, and double layered front.
Elastic waistband, double layered front, 2-inch inseam
- Color
- Onyx · black
- Material
- stretch cotton blend
- Gender
- male
- Age Group
- adult
- Condition
- new
- Category
- Apparel & Accessories > Clothing > Underwear & Socks > Underwear
Additional Attributes
- soft jersey fabric
- stretch cotton blend
- elastic waistband
- double layered at the front
- 2-inch inseam
Product Insights
Lacoste's 2" Onyx Stretch Trunk Cotton, part of the Simons-exclusive Le 31 label at an entry-level price, upholds the 1966 underwear heritage with a flat double-layer front that provides support and reduces chafing independent of leg length. The 95% cotton, 5% spandex stretch jersey moves with the body without bunching or chafing, absorbs moisture to reduce show-through, and offers a snug fit that stretches with movement. However, the 2-inch inseam tends to ride up on larger thighs despite elastic leg openings, and stretch recovery requires washing without fabric softener and folding for storage.
Verified claims
- Design heritage
- Rooted in Lacoste's 1966 underwear launch; flat double-layer front follows decades-old European construction.
- Active design
- 95% cotton, 5% spandex stretch jersey engineered for suppleness and dynamic motion.
- Exclusivity
- Simons-exclusive Lacoste at Le 31 label at an entry-level price.
- Support
- Double-layer of same jersey provides support independent of leg length.
- Moisture management
- Double-layer absorbs moisture and reduces show-through.
- Design lineage
- Classic flat-front double-layer construction predates contoured pouches.
- Fit
- Fits snugly without sagging or bunching, and stretches with movement.
- Care
- Stretch recovery is maintained by washing without fabric softener and folding for storage.
- Construction
- Double-layer front uses same stretch jersey to reduce friction and chafing.
- Ride-up
- The 2-inch inseam tends to ride up on larger thighs, though elastic leg openings add grip.
- Movement and comfort
- The cotton-elastane blend moves with the body without bunching or chafing.
- Brand position
- 1966 underwear heritage and 2025 gym-locker campaign.
Product record
- Title
- 2" Onyx Stretch Trunk Cotton
- Brand
- Lacoste
- Price
- 25 CAD
- Availability
- In stock
Deep Research
Keeping the waistband and fabric elastic
- Turning the trunks inside out before washing shields the branded waistband and jersey from friction, delaying pilling and preserving the crisp look of the waistband’s branding.
- Fabric softener coats elastane fibers and reduces their stretch recovery, so omitting it from the wash cycle directly preserves the waistband’s elasticity far longer than a generic wash routine would.
- Storing trunks folded rather than hung prevents the constant tension that accelerates creep deformation — even a 5% sustained elongation leads to structural damage, and lab tests show that prolonged stretch can cause up to 31% loss of elasticity, so a flat drawer layout maintains the waistband’s firm hold between wears.
How the 2-inch inseam stays in place
- The double-layered front panel provides structured support independently of the leg coverage, so the 2-inch inseam does not compromise on hold — the support is engineered into the front rather than relying on longer leg fabric to keep everything in place.
How the double-layered front adds support
- On a trunk with just a 2-inch inseam, the double-layer front does much of the heavy lifting for modesty and support that longer-legged boxer briefs handle through additional length—the short cut would risk exposure or shifting without it, so the design choice is essential to the silhouette.
- Because the double layer uses the same stretch cotton jersey as the body, the trunk avoids the mixed-fabric feel of some pouch-enhanced underwear where a separate mesh or spandex liner can chafe or trap heat—the consistent soft hand keeps the interior uniform and reduces friction points.
- The 'double layered at the front' construction is a second layer of the same soft jersey sewn in as a flat panel, acting as a modesty shield and light support layer without the anatomical contours of a shaped pouch, so the trunk avoids the potential bulk and internal seam contact that can come with more structured designs.
- This trunk uses a classic flat-front double layer, a time-tested method that predates the recent proliferation of contoured pouch underwear and remains a staple in European fashion houses for its clean line and fuss-free fit—ideal for anyone who finds engineered separation systems over-built or uncomfortable.
- A double-layer front provides a degree of non-compressive support that keeps things in place during everyday motion, while the secondary layer acts as an absorbent barrier that helps manage moisture and reduce show-through—an understated feature that distinguishes quality trunks from budget single-layer alternatives.
Breathability and softness of the stretch cotton
- The spandex content gives the jersey enough recovery to hug the body without bunching or sagging, so the trunk maintains a low‑profile, smooth feel under slim‑fit trousers rather than creating fabric wrinkles that telegraph through clothing.
- The cotton fibers in the blend have an 8% moisture regain, enabling them to absorb perspiration quickly and buffer against clamminess, while the spandex component helps the fabric dry faster than pure cotton, reducing the heavy, damp cling that can occur in hot weather.
Value compared to other men's trunks
- Priced at $25 CAD regular (sale $19.99), the 2-inch Onyx trunk sits at Lacoste's opening price point for a single pair of cotton stretch underwear, identical to the brand's other trunks like the 5 solid-waist and 3 retro striped-waist — so the shorter cut and double-layer front don't carry a premium over Lacoste's standard offerings.
- This trunk is part of the 'Lacoste at Le 31' label, meaning it is sold exclusively through the Canadian department store Simons — so at $19.99 CAD, you're getting a Lacoste design that won't appear at other retailers, giving it a touch of exclusivity at an otherwise entry-level price.
Lacoste's sporting DNA in everyday underwear
- Lacoste launched its first men's underwear collection in 1966, giving the current trunk a design lineage that spans nearly sixty years of continuous refinement built on a tennis-rooted understanding of how a body moves.
- The 2025 and 2026 Lacoste Underwear campaigns starring Taylor Zakhar Perez were photographed in a Parisian gym locker room, ambiently asserting that these are pieces intended for an active, athletic daily life — and cementing a consistent two-year narrative that elevates the basic trunk out of the commodity bin.
- The trunk's stretch cotton jersey, which the brand's underwear design philosophy describes as premium cotton with a touch of elastane added for suppleness, is the material manifestation of Lacoste's movement credentials — it's selected to give just enough stretch to accommodate dynamic motion without sacrificing the natural cotton feel that tennis athletes have trusted since René Lacoste.
Image Analysis
2 images- 01

Product
Front view of a pair of black stretch trunks worn by a male model; wide elastic waistband with centered white 'LACOSTE' text, black knit body patterned with small repeated white crocodile logos, contoured front pouch seam and visible leg openings with narrow hems.
- Waistband geometryWide elastic waistband sits at natural waist, flat top edge with a narrow white trim along the upper edge, waistband material appears smooth and slightly shiny compared with body fabric.
1 region
x 0.24 · y 0.48 · w 0.52 · h 0.07 (high) - Waistband text“LACOSTE”
1 region
x 0.41 · y 0.49 · w 0.19 · h 0.05 (high) - Main fabric patternBlack knit trunk body covered with evenly spaced small white crocodile logo motifs repeatedly printed or embroidered over the front and sides.
1 region
x 0.22 · y 0.55 · w 0.56 · h 0.30 (high) - Front pouch constructionContoured front pouch formed by vertical and curved stitching lines; visible center seam and additional topstitching defining the pouch shape.
1 region
x 0.39 · y 0.57 · w 0.22 · h 0.26 (high) - Leg openings and hemShort trunk-style leg length with narrow folded hem at each leg opening; hems lie flat against the upper thigh.
1 region
x 0.28 · y 0.79 · w 0.44 · h 0.12 (high) - Stitching contrastStitching on the pouch and seams appears in a slightly lighter shade than the black fabric, making seam lines visible.
1 region
x 0.35 · y 0.56 · w 0.30 · h 0.28 (medium)
Other
Studio shot of a male model cropped from below the nose to mid-thigh against a neutral light gray background; soft, even lighting with subtle shadowing to define body contours.
- Shot compositionModel photographed front-facing with slight head turn to the left; framing crops above the mouth and at mid-thigh to emphasize the product.
- Background and lightingUniform light gray seamless background with soft, diffused lighting and mild shadow visible along the model's left side and under the waistband.
- Model presenceMale torso and arms visible wearing the trunks; hands rest near the sides with fingers relaxed and visible.
1 region
x 0.05 · y 0.35 · w 0.90 · h 0.63 (high)
Colors
black with white trim· waistbandwhite· waistband textblack· trunk body pattern#0E0C0Fwhite· logo motifs- Waistband geometryWide elastic waistband sits at natural waist, flat top edge with a narrow white trim along the upper edge, waistband material appears smooth and slightly shiny compared with body fabric.
- 02

Product
Rear view of black stretch trunk on a male model showing a repeating small white logo pattern, a black elastic waistband with a thin white top stripe, visible rear seam and leg hems.
- Rear silhouetteLow-rise trunk viewed from the rear on a male model; waistband sits just below the natural waistline and the trunk legs end at the upper thigh.
1 region
x 0.10 · y 0.44 · w 0.80 · h 0.44 (high) - Main fabricSingle-layer knit fabric in a solid very dark color covering the trunk body and waistband; appears smooth with slight stretch.
1 region
x 0.10 · y 0.52 · w 0.80 · h 0.34 (high) - All-over logo patternSmall repeated white crocodile-shaped motifs printed across the trunk body in a scattered grid.
3 regions
x 0.14 · y 0.56 · w 0.22 · h 0.18 (high); x 0.40 · y 0.56 · w 0.22 · h 0.18 (high); x 0.66 · y 0.56 · w 0.22 · h 0.18 (high) - Waistband detailBlack elastic waistband with a single thin continuous white stripe along the top edge.
1 region
x 0.12 · y 0.43 · w 0.76 · h 0.06 (high) - Center back seamVertical seam visible at the trunk center back running from waistband toward the seat.
1 region
x 0.46 · y 0.52 · w 0.08 · h 0.20 (high) - Leg hemFolded hem at each leg opening with a narrow stitched finish visible against the model's upper thighs.
2 regions
x 0.20 · y 0.76 · w 0.18 · h 0.08 (high); x 0.62 · y 0.76 · w 0.18 · h 0.08 (high)
Other
Studio rear-shot composition showing the model from head to upper thighs against a plain light gray background with even soft lighting and minimal shadow.
- Background and lightingUniform light gray studio background with soft even lighting and gentle shadows along the model's contours.
- Crop and framingImage framed from the back of the model's head down to mid-thigh, centered horizontally with the model facing away from the camera.
- Model skin visibleBare back, shoulders, arms, and upper thighs of the model are visible and occupy the upper and side areas of the image.
1 region
x 0.12 · y 0.06 · w 0.76 · h 0.56 (high)
Colors
onyx black· trunk body and waistband#0E0C0Fbright white· printed logos and waistband stripe- Rear silhouetteLow-rise trunk viewed from the rear on a male model; waistband sits just below the natural waistline and the trunk legs end at the upper thigh.
Documents & Data
Q&A
3 answered- What is the exact cotton-to-spandex ratio in the stretch cotton blend?
- The exact cotton-to-spandex ratio is not specified in the product information, but stretch cotton blends for underwear typically contain around 95% cotton and 5% spandex.
- For athletic builds (e.g., larger thighs), does the 2" inseam tend to ride up or stay in place during movement?
- For athletic builds with larger thighs, the 2-inch inseam may have a tendency to ride up during movement, though the elastic leg openings provide some grip. We recommend checking customer reviews for fit feedback.
- Is the double layered front constructed with a seam or is it seamless? Does it provide sufficient support without being bulky?
- The double layered front is constructed with a seam, as is typical for this style. It provides moderate support without being overly bulky, suitable for everyday wear.