
Le 31
Solid Stretch Thong Tencel™ Lyocell
The Solid Stretch Thong Tencel™ Lyocell is a thong underwear style from Le 31 by Simons, designed in Canada and made in Portugal for everyday wear. It uses a soft TENCEL™ Lyocell stretch jersey body with a wide elastic waistband, a double-layered front, a contoured front pouch with a vertical center seam, narrow side straps, and a Y-shaped T-back rear with visible topstitching. It has a 5/5 rating from one review.
- Material
- Soft TENCEL™ Lyocell stretch jersey
- Gender
- female
- Style
- minimal, classic, elevated-basics
- Category
- Apparel & Accessories > Clothing > Underwear & Socks > Underwear
Specifications
Soft TENCEL™ Lyocell stretch thong with an elastic waist and Y-shaped back, designed in Canada and made in Portugal.
Soft TENCEL™ Lyocell stretch jersey, elastic waist, double-layered front, and Y-shape back.
- Material
- Soft TENCEL™ Lyocell stretch jersey
- Style
- minimal, classic, elevated-basics
- Occasion
- everyday
- Gender
- female
- Age Group
- adult
- Condition
- new
- Category
- Apparel & Accessories > Clothing > Underwear & Socks > Underwear
Additional Attributes
- Soft TENCEL™ Lyocell stretch jersey fabric
- Elastic waistband
- Double-layered front panel
- Y-shaped back construction
- Thong cut
- Solid color
- Exclusive Le 31 by Simons design
- Designed in Canada
- Made in Portugal
Product Insights
95% TENCEL™ Lyocell, 5% elastane stretch jersey S–XL runs S 28–30", M 32–34", L 36–38", XL 40–42" at natural waist; take usual boxer brief size Double-layered flat front panel, not a moulded or contoured pouch Removes rear fabric bulk, reduces bunching under fitted pants and stays discreet under dress slacks Y-back tapers gradually and can be gentler for long sitting, but the rear strap can still become a pressure point
Verified claims
- design & origin
- Le 31 by Simons exclusive designed in Canada; made in Portugal
- material
- 95% TENCEL™ Lyocell, 5% elastane stretch jersey
- fit & sizing
- S–XL runs S 28–30", M 32–34", L 36–38", XL 40–42" at natural waist; take usual boxer brief size
- front construction
- Double-layered flat front panel, not a moulded or contoured pouch
- rear construction
- Y-shape back with a narrow center rear strap
- waistband
- Wide elastic waistband with a slightly different tone/finish from the body fabric
- construction details
- Visible topstitching, center front seam and narrow side straps
- comfort
- TENCEL™ Lyocell gives a smooth, soft surface that glides over skin
- material behavior
- Lyocell absorbs and releases moisture, supporting a drier microclimate and breathable cool-dry feel
- odour
- Lyocell absorbs sweat efficiently and creates a less favourable environment for odour-causing bacteria
- fit & recovery
- 5% elastane improves shape retention, fit and recovery after stretching
- care
- Machine wash, do not bleach, tumble dry; gentle cool wash and low/hang dry recommended
- durability
- Lyocell can pill or haze under wet abrasion if anti-fibrillation finishing is absent
- fit check
- First-wear check: waistband flat with two fingers of give, front fills naturally, no leg hot spots, back strap centered, seams smooth
- waistband fit
- Waistband should sit level and snug without digging or rolling
- seated comfort
- Y-back tapers gradually and can be gentler for long sitting, but the rear strap can still become a pressure point
- movement & activity
- Rear strap stays centered in walking, squatting and twisting, but a thong is not ideal for high-impact running or structured quad support
- styling & uses
- Removes rear fabric bulk, reduces bunching under fitted pants and stays discreet under dress slacks
- variant fit
- Brown has no SMALL; Black, Navy/Midnight Blue and Pink carry the full S–XL run
Product record
- Title
- Solid Stretch Thong Tencel™ Lyocell
- Brand
- Le 31
- Price
- 29 CAD
- Availability
- In stock
- Rating
- 5 stars, 1 reviews
Buying Guide
1 comparison · 6 sourcesProduct comparison
Compared within this brand.
| Solid Stretch Thong Tencel™ Lyocell: Choose this if you want a minimal thong cut from a soft TENCEL™ Lyocell stretch jersey (95% lyocell, 5% elastane), with a double-layered front pouch, wide elastic waist, and Y-shaped back strap. It is a Le 31 by Simons exclusive designed in Canada and made in Portugal, offered in Black, Brown, Navy/Midnight Blue, and Pink across sizes small to extra large — though Brown is not offered in size small.[1] | Microfibre Brief Retransformed Polyester: Choose this if you want a soft, lightweight microfibre brief (85% reprocessed polyester, 15% spandex) for all-day wear: per a synthesis of customer reviews, the fabric breathes and wicks moisture, and the briefs stay in place without riding up through hours of sitting or walking. The classic, high-cut silhouette has a contoured front pouch, double-layered front, and a textured waistband that stays put. Note that some reviewers found the sizing a tad snug, so consider sizing up if you prefer a looser fit or are between sizes.[2,3] | Stretch Ribbed Brief Organic Cotton And Recycled Polyester: Choose this if you want a low-rise brief with a secure, stay-put fit — reviewers describe it as cut differently from standard boxer briefs and true to size for most wearers. It is made of ribbed stretch jersey in a blend of 65% polyester from recycled plastic bottles and 35% reprocessed cotton (the product name references organic cotton, which the listed composition does not reconcile), with a soft woven elastic waistband, contoured front pouch, and full rear coverage, offered in black, grey, white, and baby blue in sizes small to x-large. Note that some feedback indicates it runs noticeably short in the crotch, which may matter if you prefer more front coverage.[4,5,6] |
Image Analysis
2 images- 01

Product
Flat-laid black thong shown from the front: wide elastic waistband, narrow side straps, and a contoured front pouch with a vertical center seam.
- Overall shapeFront-facing thong laid flat with a wide horizontal waistband at the top, a contoured vertical front pouch that tapers to a rounded point at the bottom, and narrow side straps connecting the pouch to the waistband.
1 region
x 0.05 · y 0.18 · w 0.90 · h 0.45 (high) - Waistband material and finishWide elastic waistband with a slightly textured, matte-to-satin finish that appears marginally different in tone from the main fabric.
1 region
x 0.06 · y 0.18 · w 0.88 · h 0.08 (high) - Front pouch constructionVertical center seam running down the front pouch, creating a contoured panel; pouch fabric appears smooth with fine knit texture and a narrow folded edge at the bottom tip.
1 region
x 0.37 · y 0.26 · w 0.26 · h 0.38 (high) - Side strapsNarrow curved side straps with visible single or double row topstitching where they join the pouch and waistband.
2 regions
x 0.06 · y 0.24 · w 0.18 · h 0.12 (high); x 0.76 · y 0.24 · w 0.18 · h 0.12 (high) - Stitching detailVisible topstitching along the pouch edges and waistband seam; stitching contrasts slightly through texture but matches the garment color.
1 region
x 0.30 · y 0.22 · w 0.40 · h 0.35 (high) - Branding / labelsNo visible printed or woven brand logo or label on the exterior surfaces shown in this image.
Other
Studio product shot on a uniform light gray background with soft top lighting that produces faint shadow below the garment; image is centered and cropped with ample negative space.
- Shot compositionGarment centered horizontally, photographed flat against a plain light gray backdrop with uniform margins on left and right.
- Lighting and shadowSoft, even lighting from above produces a subtle shadow beneath the pouch and along the lower edge of the garment.
- Image qualityHigh-resolution, sharp focus across the garment with no visible motion blur or compression artifacts.
Colors
deep black· main fabric (pouch and straps)charcoal black· waistband- Overall shapeFront-facing thong laid flat with a wide horizontal waistband at the top, a contoured vertical front pouch that tapers to a rounded point at the bottom, and narrow side straps connecting the pouch to the waistband.
- 02

Product
Flat-lay rear view of a black thong with a wide elastic waistband, narrow T-back strap and visible seam lines and topstitching.
- Overall shapeFlat-lay thong shown from rear with a wide horizontal waistband and a narrow triangular rear panel that tapers to a thin vertical T-back strap at the bottom center.
1 region
x 0.07 · y 0.17 · w 0.86 · h 0.66 (high) - WaistbandWide elastic waistband that spans full width of the garment with a slightly textured or subtly glossy surface and a horizontal seam where it attaches to the body fabric.
1 region
x 0.08 · y 0.17 · w 0.84 · h 0.14 (high) - Main fabricSmooth matte knit fabric used for the body panels and triangular rear section, with visible folded edge finishing and single-needle topstitching along seams.
1 region
x 0.18 · y 0.30 · w 0.64 · h 0.53 (high) - Seams and topstitchingVisible center rear seam running vertically from waistband to T-back and curved topstitching outlining the triangular rear panel and leg openings.
1 region
x 0.38 · y 0.17 · w 0.24 · h 0.72 (high) - Inner printed label areaSmall block of white printed care/label text located on the left inner side of the triangular rear panel; text is very small and unreadable at this resolution.
1 region
x 0.32 · y 0.46 · w 0.12 · h 0.07 (medium)
Other
Studio flat-lay photo on a light gray seamless background with even lighting and slight soft shadow beneath the garment.
- Shot compositionSingle garment centered horizontally and placed near upper half of image, photographed flat from above.
- Background and surfaceUniform light gray background with no props or packaging visible.
- Lighting and shadowSoft, even studio lighting with a faint soft shadow visible below the garment, minimal specular highlights on the waistband.
- Image qualityHigh-resolution product image with clear detail; small printed text on fabric is too small to read.
Colors
matte black· main fabricdark charcoal black· waistband- Overall shapeFlat-lay thong shown from rear with a wide horizontal waistband and a narrow triangular rear panel that tapers to a thin vertical T-back strap at the bottom center.
Variants
15 SKUs| SKU | Title | Price | Avail |
|---|---|---|---|
| 4710855 | Solid Stretch Thong Tencel™ Lyocell - Black - Small | CA$29.00 | Yes |
| 4710856 | Solid Stretch Thong Tencel™ Lyocell - Black - Medium | CA$29.00 | Yes |
| 4710857 | Solid Stretch Thong Tencel™ Lyocell - Black - Large | CA$29.00 | Yes |
| 4710858 | Solid Stretch Thong Tencel™ Lyocell - Black - X-Large | CA$29.00 | Yes |
| 4710860 | Solid Stretch Thong Tencel™ Lyocell - Brown - Medium | CA$29.00 | Yes |
| 4710861 | Solid Stretch Thong Tencel™ Lyocell - Brown - Large | CA$29.00 | Yes |
| 4710862 | Solid Stretch Thong Tencel™ Lyocell - Brown - X-Large | CA$29.00 | Yes |
| 4710867 | Solid Stretch Thong Tencel™ Lyocell - Navy/midnight Blue - Small | CA$29.00 | Yes |
| 4710868 | Solid Stretch Thong Tencel™ Lyocell - Navy/midnight Blue - Medium | CA$29.00 | Yes |
| 4710869 | Solid Stretch Thong Tencel™ Lyocell - Navy/midnight Blue - Large | CA$29.00 | Yes |
| 4710870 | Solid Stretch Thong Tencel™ Lyocell - Navy/midnight Blue - X-Large | CA$29.00 | Yes |
| 4739556 | Solid Stretch Thong Tencel™ Lyocell - Pink - Small | CA$29.00 | Yes |
| 4739557 | Solid Stretch Thong Tencel™ Lyocell - Pink - Medium | CA$29.00 | Yes |
| 4739558 | Solid Stretch Thong Tencel™ Lyocell - Pink - Large | CA$29.00 | Yes |
| 4739559 | Solid Stretch Thong Tencel™ Lyocell - Pink - X-Large | CA$29.00 | Yes |
Documents & Data
Customer Reviews
1 total1 reviews · out of 5
Great!
The most comfortable thong I own for everyday wear and/or sport.