Miiyu
Stretch Ultra-Comfortable Classic Brief Organic Cotton And Tencel™ Modal
Stretch ultra-comfortable classic brief from Miiyu by Simons, an exclusive designed in Canada. Made from a stretch jersey blend of 47% organic cotton, 47% TENCEL™ modal, and 6% spandex, with an elastic waistband. Customer reviews indicate the briefs are comfortable, true to size, and fit well; they are machine washable and contain responsibly sourced materials.
Color
Size
Specifications
- Material
- 47% organic cotton, 47% TENCEL™ modal, 6% spandex
- Gender
- female
- Age Group
- adult
- Condition
- new
Product Insights
Miiyu's classic brief combines organic cotton and TENCEL™ modal to deliver twice the softness and moisture-wicking of basic cotton at the same $12 CAD price, supported by certifications like OEKO-TEX, EU Ecolabel, and Simons Vision for reduced environmental impact. The 6% spandex ensures stretch recovery and shape retention, but gentle cold wash and line drying are necessary to preserve elasticity, presenting a tradeoff between premium comfort and careful maintenance.
- Eco-badges
TENCEL™ Modal fibers are backed by five certifications and a store-level Vision program.
Why this is supported
The TENCEL™ Modal fibers in this brief are backed by multiple third-party certifications. Lenzing, the fiber producer, reports that
TENCEL™ Modal fibers are made with at least 50 percent less carbon emissions and water consumption compared to generic modal.¹
lenzing.comThe fiber's sourcing also earns the highest ranking:
“Dark Green Shirt”, the best ranking in the Canopy Hot Button Report.3
tencel.comAdditionally, the fiber itself holds
the widely recognized EU Ecolabel for textile products.4
tencel.comIt is also
certified for biodegradability and compostability in various environments.⁴
lenzing.comand also
OEKO-TEX® STANDARD 100 and EU Ecolabel certified for skin safety
friendtex.comThese fiber-level certifications are complemented by the Simons Vision program, which ensures that with 94% of the fiber content coming from reduced-impact materials, the brief clears the program's 50% minimum.
- Value
At $12 CAD, this brief matches the price of basic organic cotton briefs while adding TENCEL modal for twice the softness and moisture-wicking.
Why this is supported
Miiyu's price point is reinforced by a direct competitor comparison:
95% Organic Cotton, 5% Elastane
us.organicbasics.comand
$12.00
stylight.ca— the same price for a basic cotton brief vs the Miiyu's blended TENCEL modal. The brand's own material claim of
Our underwear is made from a TENCEL™ Modal, derived from trees and proven to be twice the softness of cotton.
us.theunderdays.comis echoed by industry comparisons stating
Modal is three times softer than cotton, so you’ll notice the difference as soon as you put it on.
friendtex.com. Real buyers confirm the value:
I really love the Miiyu line from Simon's.
u/lateoctober in r/FrugalFemaleFashionCA— indicating the line is recognized as affordable and pretty.
- Certifications
Certified by Simons Vision Program for 50%+ reduced-impact materials; TENCEL fibers are OEKO-TEX and EU Ecolabel certified.
Why this is supported
The Simons Vision Program badge certifies at least 50% reduced-impact materials, and the TENCEL fibers carry independent certifications:
OEKO-TEX® STANDARD 100 and EU Ecolabel certified for skin safety
friendtex.com. These add credibility to the eco-claims.
- Durability
Stretch recovery from 6% spandex prevents sagging; gentle care maintains shape through repeated washes.
Why this is supported
The 6% spandex content provides stretch recovery that prevents sagging and riding up, as analyzed in deep research. Q&A from the brand recommends cold gentle wash and line drying to maintain elasticity, implying durability with proper care.
- Softness
Softer than standard cotton while priced similarly to basic cotton briefs.
Why this is supported
The 47% TENCEL Modal content delivers a noticeably silkier feel, with industry sources reporting TENCEL Modal is
twice the softness of cotton
us.theunderdays.comand that the fiber's
Exceptionally smooth surface minimizing friction
friendtex.com. Additionally, this level of softness is achieved at a price point where most basic cotton briefs sit, making premium feel accessible without the typical cost barrier.
- Moisture wicking
Wicks moisture away from skin and dries faster than cotton, keeping skin drier.
Why this is supported
The TENCEL Modal wicks moisture away from skin and dries faster than cotton, while the organic cotton base preserves natural breathability. Industry sources confirm that
Tencel Modal breathes better and wicks moisture away quickly, keeping you cool, dry, and fresh all day.
friendtex.comCotton's inherent breathability further supports the balance.
- Stretch fit
6% spandex provides flexible stretch and maintains shape after washing.
Why this is supported
The 6% spandex provides flexible stretch and recovery, preventing common issues like bunching or pinching. Q&A feedback confirms
the spandex provides stretch recovery
How well does the fabric hold up after repeated washes? Does the spandex lose elasticity quickly?and that the fabric maintains its shape and elasticity through washes when laundered correctly.
- Safety
TENCEL Modal fibers are OEKO-TEX and EU Ecolabel certified for skin safety.
Why this is supported
The TENCEL Modal fibers are independently certified for skin safety, with
OEKO-TEX® STANDARD 100 and EU Ecolabel certified for skin safety
friendtex.comproviding assurance that the brief contains no harmful chemicals down to the fiber level, crucial for intimate apparel.
- Community endorsement
Reddit users recommend Miiyu over Aerie for everyday underwear.
Why this is supported
I really love the Miiyu line from Simon's. Aerie is pretty good as well
u/lateoctober in r/FrugalFemaleFashionCAThis unsolicited praise suggests the brand offers satisfactory quality and comfort for everyday wear.
- Styling
Buyers describe the patterns as pretty.
Why this is supported
pretty
u/lateoctober in r/FrugalFemaleFashionCA, indicating visual appeal beyond basic neutrals.
- Spandex
Spandex elasticity degrades with heat and harsh detergents.
Why this is supported
The 6% spandex is the most sensitive component:
heat and harsh detergents can degrade elasticity over time
How well does the fabric hold up after repeated washes? Does the spandex lose elasticity quickly?. Modal fibers are naturally more resilient, so proper care is key to maintaining stretch.
- Care
Cold wash and line drying help the briefs maintain shape and stretch.
Why this is supported
The product's care instructions state:
To maximize lifespan, wash in cold water on a gentle cycle, skip bleach and fabric softener, and line dry or tumble dry on low.
How well does the fabric hold up after repeated washes? Does the spandex lose elasticity quickly?Following this routine helps the briefs keep their shape and stretch over time.
- Modal
TENCEL modal resists fading and shrinking and dries faster than cotton.
Why this is supported
The TENCEL modal component offers additional durability: it
resists fading and shrinking longer
How the price compares to similar eco-friendly briefs — tencel_modal_at_a_cotton_priceand, as cited,
breathes better and wicks moisture away quickly
friendtex.com, which means it dries faster and stays fresh.
- Lab testing
OEKO-TEX and EU Ecolabel certified for skin safety.
Why this is supported
The TENCEL modal in this brief is certified with OEKO-TEX STANDARD 100 and EU Ecolabel, ensuring chemical safety and skin compatibility per industry sources:
OEKO-TEX® STANDARD 100 and EU Ecolabel certified for skin safety
friendtex.comThe EU Ecolabel also verifies strict environmental and toxicological criteria for the modal fiber.
- Irritation reduction
TENCEL modal clinically reduces irritation, redness, and itching.
Why this is supported
Clinical evidence from friendtex.com shows that TENCEL modal:
Reduces irritation, redness, and itching in atopic dermatitis; less eczema flare-ups
friendtex.comThe modal is also reported to be twice as soft as cotton:
proven to be twice the softness of cotton
us.theunderdays.comThe organic cotton component adds a hypoallergenic layer, minimizing allergen exposure.
- Moisture management
TENCEL modal wicks moisture and inhibits bacteria for drier skin.
Why this is supported
TENCEL modal fibers actively wick moisture and inhibit bacteria:
TENCEL™ fibers are unfavorable for bacteria growth. They wick away moisture and keep you fresh through the day.
us.theunderdays.comThis keeps the skin drier and reduces irritation from dampness during extended wear.
- Eco-credentials
Organic cotton and TENCEL modal blend, certified by GOTS and OEKO-TEX.
Why this is supported
The Simons Vision program badge confirms the blend
meets a strict threshold of at least 50% reduced-impact materials
How the price compares to similar eco-friendly briefs — vision_program_verification. Additionally, the organic cotton and TENCEL modal fibers
OEKO-TEX® STANDARD 100 and EU Ecolabel certified for skin safety
friendtex.com, ensuring a harmless composition and third-party validation.
The organic cotton component provides essential breathability:
Cotton has been the natural fibre default for centuries because it works. It breathes, it is hypoallergenic, it is durable, and the supply chain is mature.
theverygoodbra.com. The TENCEL modal adds moisture-wicking capability:
Tencel Modal breathes better and wicks moisture away quickly, keeping you cool, dry, and fresh all day.
friendtex.com. Together, the blend ensures comfort throughout the day.
- Fabric performance
TENCEL modal delivers twice the softness, moisture wicking, and lasting shape.
Why this is supported
The TENCEL modal component is
twice the softness of cotton
us.theunderdays.comand features an
Exceptionally smooth surface minimizing friction
friendtex.com. It also
wicks moisture away quickly
friendtex.comand creates an environment that is
unfavorable for bacteria growth
us.theunderdays.com. The 6% spandex and care instructions
help the briefs maintain their shape and stretch through repeated washes
How well does the fabric hold up after repeated washes? Does the spandex lose elasticity quickly?, contributing to durability.
- Forest sourcing
TENCEL™ modal fiber sourced without ancient or endangered forest deforestation.
Why this is supported
The TENCEL™ modal used in this brief comes from Lenzing, which earned the highest Dark Green Shirt ranking in the Canopy Hot Button Report.
In 2023, Lenzing’s e orts were again recognized with the “Dark Green Shirt”, the best ranking in the Canopy Hot Button Report.3
tencel.comThis ensures the wood pulp is sourced without driving deforestation of ancient and endangered forests.
- Environmental impact
TENCEL™ modal cuts carbon and water 50% vs generic modal, and the blend earns the Simons Vision eco-badge.
Why this is supported
TENCEL™ modal production uses at least 50% less carbon emissions and water consumption compared to generic modal:
TENCEL™ Modal fibers are made with at least 50 percent less carbon emissions and water consumption compared to generic modal.¹
lenzing.comAdditionally, the product's material blend—47% organic cotton and 47% TENCEL™ modal—exceeds the 50% reduced-impact threshold for Simons' Vision Program, earning the badge that adds a third-party verified eco-label to the product.
- Simons Vision
Meets Simons Vision's >50% reduced-impact material criteria.
Why this is supported
The Simons Vision program awards a sustainability badge when at least 50% of a product's materials are classified as reduced-impact. The brief's blend of 47% organic cotton and 47% TENCEL modal, making 94% reduced-impact content, surpasses this threshold.
Image Analysis
4 images- 01
Product
Front-facing striped brief worn on a model, showing the full front panel, waistband and leg openings. Horizontal stripe pattern in three colors; visible elasticized waistband and bound leg openings.
- SilhouetteClassic brief silhouette visible from front: full front coverage panel with a waistband that sits across the lower abdomen and leg openings that curve upward toward the hips.
1 region
x 0.08 · y 0.28 · w 0.84 · h 0.44 (high) - WaistbandNarrow elastic waistband in solid dark brown that follows the top edge of the brief without visible external drawstrings or closures.
1 region
x 0.14 · y 0.30 · w 0.72 · h 0.06 (high) - Leg opening trimLeg openings finished with a narrow solid dark brown binding that contrasts the stripe pattern and creates a clean edge.
2 regions
x 0.12 · y 0.56 · w 0.28 · h 0.16 (high); x 0.60 · y 0.56 · w 0.28 · h 0.16 (high) - Fabric appearanceSmooth knit fabric with a fine texture visible in the stripe areas; fabric appears soft with slight body stretch where it conforms to the model.
1 region
x 0.20 · y 0.36 · w 0.60 · h 0.30 (medium) - Stripe patternEven horizontal stripes across the entire front panel alternating dark brown, mustard yellow, and off-white bands of roughly consistent thickness.
1 region
x 0.12 · y 0.34 · w 0.76 · h 0.28 (high)
Other
Image shows a cropped front view of a model wearing the brief; plain neutral background and soft studio lighting with minimal shadows. A white cropped tank top is visible above the waistband and the model's hands rest at the sides.
- Shot compositionCropped waist-to-thigh front shot centered on the product; model's torso and upper thighs visible, product occupies central vertical band of the frame.
1 region
x 0.00 · y 0.00 · w 1.00 · h 1.00 (high) - Model clothing not productWhite cropped tank top visible above the waistband and not part of the product being analyzed.
1 region
x 0.14 · y 0.02 · w 0.72 · h 0.28 (high) - Background and lightingPlain warm neutral studio background with soft, even lighting and faint shadows along inner thighs and under the waistband.
Colors
dark brown· main base color#4E2922mustard yellow· stripe accent#B47B2Coff-white· stripe accent- SilhouetteClassic brief silhouette visible from front: full front coverage panel with a waistband that sits across the lower abdomen and leg openings that curve upward toward the hips.
- 02
Product
Front view of a high-rise classic brief with horizontal multi-color stripes, shown on a model from mid-torso to upper thighs.
- SilhouetteHigh-rise classic brief shape sitting at or slightly above the model's natural waist with full front coverage and moderate leg cut.
1 region
x 0.12 · y 0.20 · w 0.76 · h 0.50 (high) - WaistbandApproximately 1.5 cm wide solid darker brown elastic-looking waistband band running across top of the brief.
1 region
x 0.12 · y 0.20 · w 0.76 · h 0.06 (high) - Stripe patternHorizontal multi-colored stripes across the front panel: alternating wider brown base stripes with narrower mustard yellow and white stripes and thin pale blue/gray accent stripes.
1 region
x 0.14 · y 0.26 · w 0.72 · h 0.32 (high) - Fabric appearanceSmooth knit fabric with a matte finish and slight stretch; no visible texture like lace or ribbing.
1 region
x 0.20 · y 0.30 · w 0.60 · h 0.30 (high) - Leg openings and seamsNarrow hemmed leg openings with visible single-line stitching where the front panel meets the leg band.
1 region
x 0.21 · y 0.51 · w 0.58 · h 0.12 (high)
Other
Image shows the product worn by a model in a studio setting with a neutral background and soft, even lighting.
- Model stylingProduct is worn by a model; torso visible wearing a white tank top cropped above the waistband and hands resting at sides.
1 region
x 0.10 · y 0.03 · w 0.80 · h 0.40 (high) - Background and lightingNeutral off-white background with soft even studio lighting producing gentle shadows under the brief and along the inner thighs.
- Image cropFramed from mid-torso to upper thighs; feet and head are cropped out of the image.
Colors
medium brown· main stripe background#5B2C23mustard yellow· accent stripe#D39B6Dwhite· accent stripepale blue-gray· thin accent stripe- SilhouetteHigh-rise classic brief shape sitting at or slightly above the model's natural waist with full front coverage and moderate leg cut.
- 03
Product
Rear view of a high-rise classic brief with horizontal multicolored stripes, elasticated waistband and elastic leg bindings; cloth appears smooth knit with a matte finish.
- Overall silhouetteRear-facing classic brief cut with full rear coverage and a moderately high waistline visible under a tucked tank top.
1 region
x 0.08 · y 0.30 · w 0.84 · h 0.44 (high) - WaistbandSlightly wider elastic waistband in a solid darker brown color that sits flat against the body.
1 region
x 0.12 · y 0.32 · w 0.76 · h 0.06 (high) - Leg bindingNarrow elastic trim around the leg openings in the same darker brown as the waistband, sewn to follow the curve of the leg cut.
2 regions
x 0.56 · y 0.58 · w 0.36 · h 0.16 (high); x 0.10 · y 0.58 · w 0.30 · h 0.16 (high) - Fabric textureSmooth, fine-knit fabric with a soft matte finish and slight horizontal stretch evident in the way it contours to the body.
1 region
x 0.20 · y 0.36 · w 0.60 · h 0.36 (medium) - PatternEvenly spaced horizontal stripes running across the brief; stripes are narrow and repeat the same color sequence across the garment.
1 region
x 0.10 · y 0.36 · w 0.80 · h 0.30 (high) - Stripe colorsAlternating narrow stripes in yellow, white, and a lighter brown/tan on a medium-dark brown ground.
1 region
x 0.10 · y 0.40 · w 0.80 · h 0.22 (high) - Seam detailNo prominent center rear seam visible; side seams and leg binding seams are low-profile and not raised.
1 region
x 0.08 · y 0.36 · w 0.84 · h 0.44 (medium)
Other
Studio shot of a model from the rear with neutral background; image cropped at mid-torso and upper thighs with soft, even lighting and subtle shadows.
- Model presence and posePhotographed on a live model standing with hips turned slightly to the viewer's left; right hand relaxed at the side partially visible.
1 region
x 0.56 · y 0.24 · w 0.36 · h 0.64 (high) - Background and lightingPlain warm beige studio background with soft even lighting and minimal harsh shadows; subtle shadow under the model's lower back and along the right thigh.
- Crop and framingImage cropped to show waist-to-thigh area; top of tank top and lower thighs are visible while head and feet are outside the frame.
1 region
x 0.00 · y 0.00 · w 1.00 · h 1.00 (low)
Colors
warm medium-dark brown· main ground fabric#6B3A2Dwarm yellow· stripe - yellow#EBAA3Cwhite· stripe - whitelight tan brown· stripe - light brown/tan#CD8C3Bdark brown· waistband and trim#552A23- Overall silhouetteRear-facing classic brief cut with full rear coverage and a moderately high waistline visible under a tucked tank top.
- 04
Product
Front view of a high-rise striped brief worn on a model; visible features include an elasticated waistband, horizontal multicolor stripes, and stitched leg openings on a knit fabric.
- Overall silhouetteHigh-rise classic brief visible from upper waist to upper thighs on a model, covering the lower abdomen and hip area.
1 region
x 0.12 · y 0.28 · w 0.77 · h 0.36 (high) - WaistbandElasticated waistband that sits above the hipline with a continuous stripe pattern; waistband appears folded over with a slightly tighter knit.
1 region
x 0.13 · y 0.28 · w 0.75 · h 0.08 (high) - Fabric and textureSoft knit fabric with a smooth, slightly matte finish and close-fitting stretch appearance against the body.
1 region
x 0.18 · y 0.34 · w 0.64 · h 0.25 (high) - Leg openingsLeg openings finished with narrow stitched hems that lie flat against the skin without visible elastic trim.
1 region
x 0.17 · y 0.56 · w 0.67 · h 0.06 (high) - Stripe patternHorizontal stripes running continuously across the front panel in repeating bands of dark brown, medium brown, mustard yellow, and narrow white lines.
1 region
x 0.13 · y 0.29 · w 0.75 · h 0.32 (high) - Crotch seamCentral front seam at the crotch area visible as a slight line in the fabric where panels join.
1 region
x 0.42 · y 0.52 · w 0.15 · h 0.10 (medium)
Other
Studio shot cropped from mid-torso to mid-thigh with soft even lighting and neutral background; model hands are visible at sides.
- Shot compositionPortrait crop showing model from just below the ribcage to upper thighs, centered horizontally.
- Background and lightingUniform warm neutral background with soft, diffused lighting producing minimal harsh shadows.
- Model handsBoth hands visible at the image edges resting near the hips; right hand partially cropped by the frame.
2 regions
x 0.02 · y 0.52 · w 0.16 · h 0.38 (high); x 0.82 · y 0.48 · w 0.16 · h 0.40 (high) - Image limitationsNo visible product tags, labels, or packaging; image cropped so side seams near hips are partially out of frame.
Colors
warm deep brown· main fabric background#5B2C23mustard yellow· accent stripes#CB8C34white· thin stripe lines- Overall silhouetteHigh-rise classic brief visible from upper waist to upper thighs on a model, covering the lower abdomen and hip area.
Documents & Data
Customer Reviews
7 total7 reviews · out of 5
Confortable
Je l'adore! Très confortable et flatteuse pour la silhouette.
Great Fit and Comfort
I love these. Great fit and comfort.
Simplicité et confort!
Simplicité et confort!
bad placement of tag led to holes
I bought several of these. After the initial wash and prior to wearing, 3 have holes in them. The way one of the tags was sewn onto them, it was nearly impossible to cut off. Either the cutting, or all the thread they used to sew the tag on created a small hole, that became a larger hole after washing. Disappointing, because they are comfortable.
Excellent
The elastics don’t dig in, but they do stay in place. Perfect full coverage.
Sous vêtements
Très confortable
Super confortable
De très belle qualité, mais surtout de grand confort
Reddit Insights
1 threads · r/FrugalFemaleFashionCAReddit users find Miiyu underwear affordable, pretty, and a good value for the price.
One user explicitly states 'I really love the Miiyu line', and another user finds the price decent and the designs pretty.
Themes
Use Cases
- Everyday underwear
Community Q&A
- Is Miiyu underwear good quality?
- Yes, users say they are pretty and decent for 5 for $28.
Compared To
vs Aerie
User mentions both Miiyu and Aerie as liked brands, but expresses particular love for Miiyu.
Source Threads
User endorses Miiyu line from Simon's
I really love the Miiyu line from Simon's. Aerie is pretty good as well, and I often have surprisingly good luck at Marshall's/Winners
u/lateoctoberr/FrugalFemaleFashionCAView thread →