Paul Smith
3" Navy Stretch Trunk Organic Cotton
This 3-inch navy stretch trunk from Paul Smith at Le 31 is made from a soft organic cotton blend with elastane (95% organic cotton, 5% elastane). It features an elastic waistband, double-layered front panel, and a 3-inch inseam. Designed for everyday wear, it offers comfort under jeans, though users note it's not as soft as micro modal alternatives.
- Color
- Navy
- Material
- Soft, stretch jersey in an organic cotton blend
- Gender
- male
- Style
- casual, classic
- Category
- Apparel & Accessories > Clothing > Underwear & Socks > Underwear
Size
Specifications
Men's stretch trunk in navy organic cotton blend with elastic waistband and double layered front.
Soft stretch jersey, elastic waistband, double layered front, 3-inch inseam.
- Color
- Navy · blue
- Material
- Soft, stretch jersey in an organic cotton blend
- Secondary
- elastane
- Style
- casual, classic
- Occasion
- everyday
- Gender
- male
- Age Group
- adult
- Condition
- new
- Category
- Apparel & Accessories > Clothing > Underwear & Socks > Underwear
Additional Attributes
- Soft, stretch jersey fabric
- Organic cotton blend
- Elastic waistband for comfortable fit
- Double layered front panel
- 3-inch inseam
- Trunk silhouette
- Stretch construction
- Navy color
Product Insights
A mainline Paul Smith trunk in GOTS-certified organic cotton that uses up to 91% less water and no synthetic pesticides, offering a true-to-size fit with stretch but a less silky feel than micro modal. Its double-layered front improves durability and opacity under sheer trousers, though care requires low-heat drying to preserve elastic. The signature stripe, with 40 colors and a hand-winding origin, acts as a covert brand mark. Priced at $9.99 during sales—less than half the per-unit price of Paul Smith 3-packs—it's currently out of stock. Buyers find it comfortable for layering under jeans, and mainline construction ensures consistent quality, balancing sustainability and heritage against a tradeoff in softness.
Verified claims
- Pricing
- At $9.99 sale, this mainline trunk costs less than half the per-unit price of Paul Smith 3-packs.
- Fit
- True-to-size fit with stretch; organic cotton feels less silky than micro modal.
- Sustainability
- GOTS-certified organic cotton uses up to 91% less water and no synthetic pesticides.
- Durability
- Double-layered front adds durability; cold wash and low dry preserve elastic.
- GOTS certification
- GOTS-certified organic cotton with full supply chain verification.
- Cultivation benefits
- Grown with 91% less water and no synthetic pesticides.
- Value
- $9.99 CAD sale price—less than half the per-pair price from European retailers.
- Stripe origin
- Signature stripe originated from hand-winding technique in the 1970s.
- Stripe brand icon
- Stripe has 40 colors and acts as a covert brand mark without a logo.
- Softness
- Buyers say it's not as soft as micro modal; GOTS, 91% less water.
- Sizing
- True to Paul Smith's core sizing across S–XL
- Layering
- Buyers report comfortable layering under jeans
- Double-layered front
- Double-layered front improves durability and opacity for sheer trousers.
- Heat sensitivity
- Dryer heat above 140°F permanently degrades elastane, reducing waistband fit.
- Mainline construction
- Paul Smith at Le 31 label means mainline, not diffusion line.
- Brand lineage
- Mainline Paul Smith sold through Simons’ Le 31, not a sub-line.
- Organic cotton quality
- GOTS-certified 95% organic cotton blend with double-layered front for durability.
- Signature Stripe
- Signature Stripe serves as Paul Smith's covert brand mark, recognizable by design-savvy wearers.
- Everyday comfort
- Double-layered front and stretch keep trunks in place under fitted jeans for all-day comfort.
- Care
- Secure-fitting waistband requires low-heat drying to avoid permanent stretch.
- Mainline quality
- Mainline Paul Smith construction ensures consistent quality and comfort.
Product record
- Title
- 3" Navy Stretch Trunk Organic Cotton
- Brand
- Paul Smith
- Price
- 35 CAD
- Availability
- Out of stock
Image Analysis
2 images- 01
Product
Front view of a male model wearing solid navy boxer trunks with a fitted elastic waistband showing a small white script logo at center front.
- Overall silhouetteForm-fitting boxer trunk silhouette with short leg length and a contoured front pouch seam visible; trunk covers upper thighs and sits at the natural waist.
1 region
x 0.14 · y 0.52 · w 0.72 · h 0.37 (high) - WaistbandElastic waistband in a slightly darker navy than the body, approximately 1 to 1.5 inch high, with a narrow textured finish along its top edge.
1 region
x 0.20 · y 0.45 · w 0.60 · h 0.10 (high) - Waistband logo“Small white centered script logo printed on the front of the waistband.”
1 region
x 0.46 · y 0.48 · w 0.10 · h 0.04 (high) - Front seam constructionVertical stitched front seams creating a contoured pouch and a central front panel seam; stitching visible in slightly raised seam lines.
1 region
x 0.35 · y 0.56 · w 0.30 · h 0.20 (high) - Leg hemFolded stitched leg hems with visible topstitching hugging the upper thigh.
1 region
x 0.18 · y 0.78 · w 0.65 · h 0.08 (high) - Fabric appearanceSmooth, matte knit fabric with minimal surface texture and slight stretch indicated by form fit.
1 region
x 0.20 · y 0.55 · w 0.60 · h 0.30 (high)
Other
Studio shot showing a cropped male model against a pale neutral background with even studio lighting and soft shadowing to the right; image is vertically oriented and centered on torso and trunks.
- Model framingMale model shown from just below the chin to mid-thigh; head partially cropped at top edge and right arm extended down with left hand touching waistband.
1 region
x 0.00 · y 0.00 · w 1.00 · h 1.00 (high) - Background and lightingEven neutral light grey background with soft studio lighting producing gentle shadows on the model's right side and a faint cast shadow on the background.
1 region
x 0.00 · y 0.00 · w 1.00 · h 1.00 (high) - Visible text transcription“Paul Smith”
1 region
x 0.46 · y 0.48 · w 0.10 · h 0.04 (high)
Colors
navy· trunk body#1E1E3Adark navy· waistbandwhite· waistband logo- Overall silhouetteForm-fitting boxer trunk silhouette with short leg length and a contoured front pouch seam visible; trunk covers upper thighs and sits at the natural waist.
- 02
Product
Rear view of a male model wearing solid navy trunks; visible features include a low-rise elastic waistband, smooth single-piece back panel, short leg length, and small white script logo on the waistband.
- Overall silhouetteRear-facing short trunk with a single smooth back panel and short leg openings that extend down the upper thigh.
1 region
x 0.12 · y 0.48 · w 0.76 · h 0.44 (high) - Waistband constructionLow-rise elastic waistband sits at the natural waistline and appears as a separate band of slightly different finish than the body fabric.
1 region
x 0.18 · y 0.47 · w 0.64 · h 0.06 (high) - Seam detailVisible horizontal stitching at the hem of each leg and a center back seam joining the waistband to the body panel.
2 regions
x 0.18 · y 0.78 · w 0.64 · h 0.08 (high); x 0.44 · y 0.46 · w 0.12 · h 0.06 (medium) - Waistband logo center“Small white script logo centered on the back of the waistband; characters are not fully clear.”Partial
1 region
x 0.46 · y 0.47 · w 0.08 · h 0.04 (medium) - Waistband logo right“Small white script logo or mark visible near the right-back side of the waistband; partially cropped by the model's posture.”Partial
1 region
x 0.76 · y 0.48 · w 0.10 · h 0.04 (medium)
Other
Studio rear shot of a male model against a plain light gray background with even soft lighting and minimal shadows.
- Model and poseMale model shown from the rear standing upright with arms relaxed at sides; only the torso, hips, and upper thighs are visible.
1 region
x 0.00 · y 0.00 · w 1.00 · h 1.00 (high) - Background and lightingUniform light gray seamless background with soft, even studio lighting producing mild highlights on the model's skin and minimal cast shadow.
- Image cropImage is cropped to include the model from upper shoulders down to mid-thigh; the head is partially out of frame at the top.
Colors
deep navy· main fabric#1E2134dark navy· waistbandwhite· waistband logo- Overall silhouetteRear-facing short trunk with a single smooth back panel and short leg openings that extend down the upper thigh.
Documents & Data
Reddit Insights
1 threads · r/MensUnderwearGuideReddit users find Paul Smith organic cotton briefs comfortable and soft, though not as silky as micro modal alternatives.
Overall, users express positive sentiments: they find the briefs comfy, soft, and cute. One user notes they are not the softest compared to Todd Sanfield micro modal, but still comfortable.
Themes
Use Cases
- Everyday wear under jeans
Watch Out For
Compared To
vs Todd Sanfield micro modal briefs
Paul Smith's organic cotton briefs are comfortable but not as soft as Todd Sanfield's micro modal briefs.
Source Threads
Paul Smith briefs material and comparison
95% organic cotton and the rest is elastane. They are pretty soft but not as soft as some of my micro modal ones from Todd Sanfield.
u/NYC_DILFr/MensUnderwearGuideView thread →