Miiyu
Fine Ribbing Boyshort Tencel™ Modal
These Miiyu by Simons boyshorts are fine-ribbed underwear designed in Canada, made from a soft stretch TENCEL™ modal and cotton blend. They feature a stretch waistband and full-coverage leg openings, suitable for everyday use. Customer feedback from Reddit praises the softness and breathability of the fabric, and a matching bra is available separately.
- Material
- Stretch TENCEL™ modal blend
- Gender
- female
- Category
- Apparel & Accessories > Clothing > Underwear & Socks > Underwear
Color
Size
Specifications
Soft ribbed boyshorts made from stretch TENCEL™ modal blend with a comfortable waistband.
Ribbed jersey, stretch fabric, waistband, matching bra.
- Material
- Stretch TENCEL™ modal blend
- Gender
- female
- Age Group
- adult
- Condition
- new
- Category
- Apparel & Accessories > Clothing > Underwear & Socks > Underwear
Additional Attributes
- Soft ribbed jersey texture
- Stretch TENCEL™ modal blend fabric
- Stretch waistband for comfortable fit
- Exclusive Miiyu by Simons design
- Matching bra available separately
Product Insights
This boyshort offers a barely-there feel with TENCEL modal that wicks moisture 60% faster and absorbs 50% more than cotton, retains softness and resists pilling, and provides stretch recovery to prevent ride-up and sagging, though the waistband rides up on shorter torsos and the fabric relaxes after several wears, offset by a low cost-per-wear from bundle pricing and Reddit endorsement.
- Rear coverage
Boyshort cut provides bikini-like coverage, not full seat coverage.
Why this is supported
Multiple reviews indicate that this boyshort offers significantly less rear coverage than expected, more akin to a bikini. A customer explains:
Ne sont pas comme sur la photo,ne recouvrent pas les fesses,c est plus bikini que garçonne,je suis déçue.
Customer review, December 22, 2025This sentiment is echoed in other feedback, noting the naming mismatch leads to disappointment for those expecting full coverage.
- Waistband height
Waistband rides up to the breastbone on shorter torsos.
Why this is supported
Based on customer reviews, the high-rise waistband can ride up on individuals with shorter torsos, sometimes reaching the breastbone and causing discomfort. This is noted as a limitation for certain body types.
- Tummy accommodation
Stretchy fabric accommodates a belly without rolling down.
Why this is supported
The stretchy ribbed fabric receives praise for accommodating a belly comfortably. One buyer shares:
Le tissu est très extensible donc on ne les sent pas et c'est un modèle qui fait même avec un petit ventre.
Customer review, October 3, 2025This highlights the fabric's stretch and the high rise's ability to prevent rolling.
- Fit
Buyers report comfortable tummy coverage for fuller midsections, but ride-up for shorter torsos.
Why this is supported
Reviews highlight both strengths and trade-offs in the fit. One review notes that
Le tissu est très extensible donc on ne les sent pas et c'est un modèle qui fait même avec un petit ventre.
Customer review, October 3, 2025, indicating the fabric accommodates a fuller midsection. However, another describes the cut as
Not a true boyshort — the cut rides higher and offers less rear coverage than expected, fitting more like a bikini.
theme, which contributes to the waistband's tendency to ride up. A separate reviewer confirmed the ride-up issue:
The high-rise waistband can ride up uncomfortably to the breastbone on some body types, especially with shorter torsos.
gotcha. Together, these reports show the fit works well for average-to-long torsos but can present problems for shorter individuals.
- Softness
Modal fibers are half the diameter of cotton and wick moisture 60% faster for a dry, barely-there feel.
Why this is supported
The fiber's fineness creates a low-friction surface:
Modal fibers are approximately 50% finer than standard cotton fibers — measuring around 0.5 dtex compared to cotton’s 1.0–1.5 dtex
textiletuts.com. That, coupled with modal's ability to
wick moisture 60% better than cotton
friendtex.com, keeps the garment dry and comfortable. A long-time user notes,
I swear by the miiyu line at Simon's. Specifically the cotton/modal blend that gives a great blend of softness and breathability.
u/zerberts in r/ottawaThis combined performance explains the 'barely there' feel.
- Durability
TENCEL modal retains its softness through many washes and resists pilling far better than cotton.
Why this is supported
The fiber structure is built to last:
TENCEL™ Modal fibers’ cross-section and tenacity favor fabric softness, allowing them to withstand repeated washing and drying cycles.
lenzing.comThis is supported by modal's
excellent wet strength, meaning garments retain their structural integrity through repeated launderings
textiletuts.com. Pilling is also minimized:
Modal holds those fibers tight. They just don’t want to come loose.
metoin.coAs a result, the manufacturer notes that
TENCEL™ modal is known for durability and low pilling. With proper care (cold wash, low heat drying), the ribbed fabric should retain softness and elasticity through many washes.
Does the ribbed fabric develop pilling or lose its elasticity after multiple washes?- Breathability
Buyers report the ribbed TENCEL blend stays cool and breathable all day.
Why this is supported
The fine ribbing forms air channels that promote airflow.
Reddit users confirm:
I swear by the miiyu line at Simon's. Specifically the cotton/modal blend that gives a great blend of softness and breathability.
u/zerberts in r/ottawa- Moisture wicking
Modal absorbs 50% more moisture and wicks sweat 60% faster than cotton.
Why this is supported
Clinical tests show that modal can wick moisture 60% better than cotton
friendtex.comand
Modal can absorb about 50% more water than conventional cotton fibers
underweariq.com. Cloudninepajamas.com describes the fiber as
Certified sustainable fibre made from beechwood pulp that is measurably softer, more breathable, and more moisture-wicking than conventional fabrics.
cloudninepajamas.com, which is especially beneficial for a full-coverage garment like a boyshort.
- Wet strength
Modal retains 90% tensile strength when wet, while cotton loses 25%.
Why this is supported
Modal retains strength when wet, while cotton weakens:
Tensile Strength (Wet) | Reduced by ~25% | Retains ~90% strength
metoin.co— this means the fabric resists thinning and tear damage even when damp from sweat or washing.
- Barely-there feel
Buyers report the lightweight, stretchy fabric feels barely there.
Why this is supported
Customer reviews emphasize the lightweight and stretchy feel:
J'adore Tissu léger et extensible, très confortable.
Customer review, February 16, 2026Another reviewer notes:
Le tissu est très extensible donc on ne les sent pas et c'est un modèle qui fait même avec un petit ventre.
Customer review, October 3, 2025The rib construction contributes to this:
, aligning the barely-there sensation with the fabric's technical properties.
- Stretch recovery
Ribbed knit expands with movement and snaps back, preventing ride-up and sagging.
Why this is supported
The ribbed construction actively resists ride-up:
Body-Hugging Ribs – Vertical stitching expands with movement, no ride-up.
uk.voghion.comand provides
this fabric offers better stretch and recovery than standard jersey fabrics, making it ideal for fitted garments.
seetimeluxury.com. The smooth fiber face
naturally smooth against skin
cloudninepajamas.comreduces friction. The cotton blend
adds a bit of body and reduces the slinky feel
modamaterial.com. A buyer confirms the lightweight feel:
J'adore Tissu léger et extensible, très confortable.
Customer review, February 16, 2026The ribbing also locks shape with cross-grain and lengthwise stretch for memory return.
- Panty line concealment
Ribbed texture scatters light to minimize VPL under close-fitting trousers.
Why this is supported
The fine vertical ribbing creates a textured surface that scatters light, softening the fabric edge against the skin. This reduces the visibility of panty lines through thin or light-colored trousers compared to smooth jersey, as established in deep research.
- Shape retention
Buyers report that the fabric relaxes and loses supportive fit after several wears.
Why this is supported
The cotton content in the blend is designed to add body,
The cotton adds a bit of body and reduces the slinky feel
modamaterial.comand the fine ribbed knit offers better stretch recovery than smooth jersey,
this fabric offers better stretch and recovery than standard jersey fabrics, making it ideal for fitted garments.
seetimeluxury.comyet users report that the fabric relaxes and loses supportive fit after several wears. Heat sensitivity is a factor:
A high-heat dryer or iron can melt or scorch the fibers. Use low heat.
modamaterial.comHowever, shrinkage is minimal:
Shrinkage Rate | 3-5% in standard dryers | <1% with proper care
metoin.coSo while the fabric holds its size well, the fit relaxes over time.
- Value tradeoff
Low cost-per-wear (~$8/pair in 5-pack) offsets limited shape retention.
Why this is supported
The 5-pack bundle of the Fine Ribbing Boyshort, when priced at $39.95, yields a per-pair cost of roughly $8. At this price point, the limited long-term shape retention reported by some users becomes a practical tradeoff: the low investment per wear reduces the financial risk of the fabric relaxing after a few months.
- Pricing
Certified TENCEL-modal boyshort at $12.99; $7.99 per pair in a 5-pair bundle.
Why this is supported
The 5-for-$39.95 bundle brings per-pair cost to $7.99, roughly 40% below the single $12.99 price.
Miiyu by Simons: an exclusive designed in Canada
stylight.caSizes Available XS S M L XL
stylight.caMatching bra sold separately
stylight.caSoft ribbed jersey in a stretch TENCEL modal blend
stylight.ca- Material
50/50 TENCEL-modal cotton blend with high bursting strength and 90% wet strength retention.
Why this is supported
Guess in a blend of cotton and modal
stylight.caPlain knitted fabrics from modal/cotton blended yarns have the highest bursting strength values.
cotton.orgTensile Strength (Wet) | Reduced by ~25% | Retains ~90% strength
metoin.co), meaning the boyshort holds its shape after repeated washes.
The TENCEL modal in this boyshort is produced under Lenzing's sustainable process.
The production process uses less water and energy compared to conventional fabrics, and it’s derived from sustainably managed forests.
dorsill.comThis is reinforced by independent certification sources noting
Better (FSC-certified beech forests)
textiletuts.comThe product listing itself describes
Soft ribbed jersey in a stretch TENCEL modal blend
stylight.caconfirming the use of branded TENCEL modal.
Reddit users highlight the blend's attributes:
Specifically the cotton/modal blend that gives a great blend of softness and breathability.
u/zerberts in r/ottawaAn external fabric guide adds that the cotton content 'reduces the slinky feel' typical of pure modal:
The cotton adds a bit of body and reduces the slinky feel
modamaterial.comThis aligns with the stated composition of 50% modal, 50% cotton, confirming the deliberate balance for everyday comfort and durability.
- Buyer sentiment
Frugal-fashion Reddit users recommend Miiyu for its soft, breathable blend at an affordable price.
Why this is supported
I really love the Miiyu line from Simon's.
u/lateoctober in r/FrugalFemaleFashionCAI swear by the miiyu line at Simon's. Specifically the cotton/modal blend that gives a great blend of softness and breathability.
u/zerberts in r/ottawaThese quotes show the value validation among cost-conscious shoppers.
- Moisture management
Modal absorbs 50% more moisture than cotton and wicks sweat 60% faster.
Why this is supported
Performance advantages of modal are supported by clinical testing.
Clinical tests show that modal can wick moisture 60% better than cotton
friendtex.comand
Modal can absorb about 50% more water than conventional cotton fibers
underweariq.comThese figures apply to the TENCEL modal used in this product.
- Care
Wash cold, gentle cycle; dry low or air dry; no bleach or softener.
Why this is supported
The brand’s care guidance is
machine wash cold on a gentle cycle and tumble dry low or lay flat. Avoid bleach and fabric softener.
What are the recommended washing instructions to maintain the softness and shape of the TENCEL™ modal fabric?, which aligns with modal-specific advice: high heat can damage fibers —
A high-heat dryer or iron can melt or scorch the fibers. Use low heat.
modamaterial.com- Shape and size stability
Shrinks less than 1% and snaps back to shape after wear with proper care.
Why this is supported
Independent testing shows the blend shrinks less than 1% with proper care, unlike pure cotton which shrinks 3-5%:
Shrinkage Rate | 3-5% in standard dryers | <1% with proper care
metoin.coThe cotton component in the blend further helps maintain shape:
The cotton adds a bit of body and reduces the slinky feel
modamaterial.com- Opacity
White and Ivory may be sheer under white pants, but ribbing reduces panty line visibility.
Why this is supported
The brand's Q&A states that
Light colors like white and ivory in stretch modal fabrics may be somewhat sheer, especially under white pants.
Are the light colors like white or ivory opaque enough to not show through under white pants?. Separately, deep research concludes that the ribbing texture
making these boyshorts less likely to print through thin or light-colored trousers
Ribbed jersey: feel and performance in underwear — panty_line_concealmentand recommends darker shades or the seamless nude option for full opacity under white pants.
- Design origin
Designed in Canada for Simons, with certified TENCEL modal at $12.99.
Why this is supported
The product listing on Stylight states Miiyu is
Miiyu by Simons: an exclusive designed in Canada
stylight.ca. The fabric is specified as
Soft ribbed jersey in a stretch TENCEL modal blend
stylight.ca. The color options include
comes in multiple colors including White, Mint Green, and Mauve
How Miiyu's price stacks against other modal boyshorts — xs_xl_sizing_and_multi_color_palette. These details together confirm the brand's design story: a private-label, Canadian-designed product offering certified modal at a competitive price.
- Set design
Matching bra sold separately; coordinate set.
Why this is supported
The product description explicitly notes:
Matching bra sold separately
stylight.ca.
- Sizing
XS-XL sizes at uniform single and bundle pricing.
Why this is supported
The size option listing confirms availability XS through XL:
Sizes Available XS S M L XL
stylight.ca. The 5-pack bundle is priced at $39.95, making the per-pair cost $7.99 and eliminating any size surcharge—a rare value in this category.
- Reddit endorsement
Reddit users recommend Miiyu for its soft, breathable fabric and value pricing.
Why this is supported
Catalog verified community endorsement through multiple Reddit threads. In the r/FrugalFemaleFashionCA subreddit, a user said:
I really love the Miiyu line from Simon's.
u/lateoctober in r/FrugalFemaleFashionCASimilarly, a user in r/ottawa wrote:
I swear by the miiyu line at Simon's. Specifically the cotton/modal blend that gives a great blend of softness and breathability.
u/zerberts in r/ottawaThe endorsement is reinforced by the brand's accessible pricing:
5‑for‑$39.95 offer drops the per‑pair cost to $7.99
How Miiyu's price stacks against other modal boyshorts — 5_for_39_95_bundle_pricingPositive consumer reviews (e.g., 'J'adore Tissu léger et extensible, très confortable.') further support that the Reddit sentiment reflects a consistent user experience.
Image Analysis
3 images- 01
Product
Front view of a model wearing white mid-rise boyshort underwear and a matching white bra, partially covered by a long light-blue plush bathrobe; white textured crew socks visible on feet.
- Boyshort silhouetteWhite boyshort-style underwear visible from front with a smooth, slightly elasticized waistband and full-coverage cut over the hips and upper thighs.
1 region
x 0.34 · y 0.31 · w 0.32 · h 0.20 (high) - Bra visibleMatching white bra with molded cups and wide shoulder straps, visible above the boyshorts and under the robe.
1 region
x 0.34 · y 0.13 · w 0.32 · h 0.14 (high) - Robe material and fitLong, light-blue plush bathrobe with a soft, fuzzy texture, open front, large rectangular patch pockets on each side, and long sleeves; robe drapes to just above ankles.
1 region
x 0.22 · y 0.16 · w 0.56 · h 0.70 (high) - Robe pocket detailRectangular front pockets with visible top openings located at hip height on both sides of the robe.
2 regions
x 0.25 · y 0.46 · w 0.14 · h 0.14 (high); x 0.61 · y 0.46 · w 0.14 · h 0.14 (high) - SocksWhite crew socks with a textured, ribbed or ruched cuff stacked around the ankle and smooth foot section.
1 region
x 0.43 · y 0.76 · w 0.14 · h 0.22 (high) - Visible seams and edgesVisible seam lines at the bra underbust and along the boyshort waistband; robe hem and sleeve cuffs show folded stitched edges.
Other
Lifestyle kitchen scene with model leaning on a counter beneath a curtained window; hanging plant and pastel cabinetry form the background. Even soft daylight from window creates mild backlighting and soft shadows on the subject.
- Shot compositionFull-body portrait framed vertically showing model from head to feet, centered in the image and leaning against a kitchen counter.
- Background elementsPale yellow and green kitchen cabinets, a countertop with a dish rack, a curtained window providing backlight, and a small hanging planter to the left of the model.
1 region
x 0.05 · y 0.08 · w 0.90 · h 0.34 (high) - LightingSoft natural light from the window behind the model causing gentle backlighting and mild, even frontal fill; no harsh highlights.
- Image qualitySharp focus on the model and apparel with slight depth separation from background; no significant motion blur.
Colors
white· boyshorts#C7BCB8white· bralight blue· bathrobewhite· socks- Boyshort silhouetteWhite boyshort-style underwear visible from front with a smooth, slightly elasticized waistband and full-coverage cut over the hips and upper thighs.
- 02
Product
White fine-ribbed boyshort underwear shown on a model from the front-left hip to upper thighs; visible features include a narrow elastic waistband, fine vertical rib texture, and short leg coverage with finished leg openings.
- Silhouette and coverageLow-rise boyshort silhouette sitting below the natural waist with full front and side hip coverage extending to the upper thighs.
1 region
x 0.12 · y 0.18 · w 0.76 · h 0.38 (high) - WaistbandNarrow folded or elasticized waistband finished with a clean topstitch, running continuously around the top edge.
1 region
x 0.17 · y 0.18 · w 0.60 · h 0.06 (high) - Leg openings finishShort leg openings finished with a narrow hem or elastic binding that sits flat against the thigh.
1 region
x 0.16 · y 0.48 · w 0.68 · h 0.12 (high) - Fabric textureFine vertical ribbing visible across the entire garment, producing narrow raised ribs and shallow grooves.
1 region
x 0.20 · y 0.22 · w 0.55 · h 0.34 (high) - SheernessSlight translucency where the fabric overlays skin tones, allowing faint visibility of underlying color differences through the white fabric.
1 region
x 0.36 · y 0.24 · w 0.30 · h 0.28 (medium) - Side seamVertical side seam visible on the right hip panel connecting front and back panels with a smooth flat finish.
1 region
x 0.63 · y 0.22 · w 0.12 · h 0.30 (high)
Other
Studio product shot of a model cropped from midriff to mid-thigh with soft lighting and neutral background; both hands and part of the torso are visible.
- Shot compositionCropped three-quarter front view focused on the garment area from just below the navel to the mid-thigh on a standing model angled slightly left.
1 region
x 0.05 · y 0.00 · w 0.90 · h 1.00 (high) - Background and lightingEven, soft studio lighting on a neutral light beige background producing gentle, diffuse shadows and no harsh highlights.
- Model arms visibleBoth of the model's hands and forearms are visible at the image sides; left hand near the left thigh and right hand near the right thigh.
2 regions
x 0.02 · y 0.40 · w 0.18 · h 0.54 (high); x 0.80 · y 0.24 · w 0.18 · h 0.60 (high) - Image qualitySharp focus on garment texture and seams with no visible motion blur; colors appear natural under studio lighting.
Colors
white· main body- Silhouette and coverageLow-rise boyshort silhouette sitting below the natural waist with full front and side hip coverage extending to the upper thighs.
- 03
Product
Rear view of a model wearing a white fine-ribbed boyshort and matching bra showing back band, adjustable straps, and elastic trim.
- Overall silhouetteRear-facing model wearing a full-coverage boyshort cut that reaches the upper hips and covers the buttocks; matching bra back band sits horizontally across the back just below the shoulder blades.
1 region
x 0.08 · y 0.18 · w 0.84 · h 0.72 (high) - Fabric textureFine vertical ribbing visible across the boyshort and bra band, producing narrow raised lines running top-to-bottom on the garment surfaces.
2 regions
x 0.12 · y 0.46 · w 0.76 · h 0.44 (high); x 0.18 · y 0.18 · w 0.64 · h 0.22 (high) - Bra back hardwareHorizontal two-row hook-and-eye closure centered on the back band with a rectangular stitched extension on each side of the closure.
1 region
x 0.38 · y 0.27 · w 0.24 · h 0.08 (high) - Adjustable strapsThin adjustable shoulder straps attach to the band with metal or plastic rectangular sliders and small ring attachments at the band connection points.
2 regions
x 0.22 · y 0.08 · w 0.12 · h 0.34 (high); x 0.66 · y 0.08 · w 0.12 · h 0.34 (high) - Elastic trimNarrow smooth elastic trim finishes the waistband and leg openings, appearing slightly smooth and less ribbed than the main fabric.
2 regions
x 0.14 · y 0.44 · w 0.72 · h 0.06 (high); x 0.12 · y 0.82 · w 0.76 · h 0.12 (high) - Center back seamA faint vertical center seam runs down the middle of the boyshort back panel.
1 region
x 0.48 · y 0.56 · w 0.04 · h 0.38 (medium)
Other
Studio product shot showing the model from the rear against a plain light background with soft even lighting and minimal shadows.
- Shot compositionVertical framed studio photograph cropped from the upper head to mid-thigh, centering the model's back and garment.
1 region
x 0.08 · y 0.02 · w 0.84 · h 0.96 (high) - BackgroundUniform off-white or very light beige seamless background with no visible props or patterns.
- Lighting and shadowSoft, even lighting with gentle shadows along body contours and minimal specular highlights on skin.
- Hair occlusionCurly dark hair partially obscures the upper left shoulder area of the model.
1 region
x 0.28 · y 0.00 · w 0.28 · h 0.18 (high)
Colors
white· main fabric (boyshort body and bra band)#CBC4C4white· straps and small trim- Overall silhouetteRear-facing model wearing a full-coverage boyshort cut that reaches the upper hips and covers the buttocks; matching bra back band sits horizontally across the back just below the shoulder blades.
Documents & Data
Customer Reviews
14 total14 reviews · out of 5
Very nice but fit poor
This bra is very soft and I love how it feels on however after wearing it for a little while the bra rides up . It goes up onto the bottom of my breasts and then uncomfortable
Très confortable
J'adore! Je prévois en commander d'autres
Perfection
J’en prendrais de toutes les couleurs, mais il n’y a que gris! Super confortable, tombe bien!
Raffiné mais…
Le tissu est un peu lâche avec le temps.
bottom
OK
Très confortable
Très confortable
Parfait pour le post-partum!
Le tissu est très extensible donc on ne les sent pas et c'est un modèle qui fait même avec un petit ventre.
Elles sont géniales, très légères
Elles sont géniales, très légères et confortables
Comfy!
I bought two pairs on sale and I’m so glad I did. Very comfy fabric, lightweight.
Très bon achat
Légèreté, confort.
❤️
J'adore ! Tissu léger et extensible, très confortable.
Garçonne taille haute
Magnifique
Elles agrandissent
Ne sont pas comme sur la photo,ne recouvrent pas les fesses,c est plus bikini que garçonne,je suis déçue.
Parfaite
Parfaite
Reddit Insights
2 threads · r/FrugalFemaleFashionCA, r/ottawaReddit users praise the Miiyu line from Simon's for its soft and breathable cotton/modal blend, finding it affordable and high-quality.
Both mentions praise the softness, breathability, and value of the Miiyu line.
Themes
Use Cases
- Everyday underwear
Source Threads
Positive mention of Miiyu line in search for affordable underwear
I really love the Miiyu line from Simon's.
u/lateoctoberView thread →
Endorsement of Miiyu line for softness and breathability
I swear by the miiyu line at Simon's. Specifically the cotton/modal blend that gives a great blend of softness and breathability.
u/zerbertsView thread →