
Miiyu
Solid Stretch Boyshort Tencel™ Modal
This Solid Stretch Boyshort is a women's underwear garment from Miiyu by Simons, made for everyday wear with a wide elastic waistband and full rear coverage. It is crafted from a soft, stretchy jersey blend of 89% TENCEL™ modal and 11% elastane, and is available in sizes XS to L in black, light grey, and white. Customer reviews highlight its comfort and true-to-size fit, though one reviewer recommends sizing up for a more relaxed fit.
Color
Size
Specifications
- Material
- 89% TENCEL™ modal, 11% elastane
- Gender
- female
- Age Group
- adult
- Condition
- new
Product Insights
Solid Stretch Boyshort Tencel™ Modal from Miiyu is a sustainably certified boyshort that derives its softness from fiber structure, not chemical softeners, and offers 50% greater absorbency than cotton, eliminating the need for a separate gusset. The fabric resists pilling (grade 4-5) and shrinkage (3-5%), snaps back after wear, and features a wide flat waistband and full-coverage boyshort cut that prevents ride-up. Fits true to size (XS–XL, comparable to Aerie) and is endorsed by Reddit buyers as a quality alternative at Simons. Priced at $12.99 ($7.99 in 5-pack) it undercuts similar sustainable modal boyshorts by $2–$7, with EU Ecolabel, Canopy Dark Green Shirt, and Higg MSI certification reflecting 50% lower emissions and water use.
Verified claims
- Softness
- Softness is from fiber structure, not chemical softeners.
- Moisture management
- Fabric is 50% more absorbent than cotton, so no separate gusset is needed.
- Durability
- Snaps back after wear, resists pilling (grade 4-5) and shrinkage (3-5%).
- Fit
- Wide flat waistband and boyshort cut keep the garment from riding up.
- Ride-up resistance
- Full-coverage cut, smooth fabric, and stretch recovery prevent ride-up.
- Sizing
- Fits true to size and is comparable to Aerie; sizes XS to XL available.
- Material
- 89% TENCEL modal, 11% elastane: EU Ecolabel-certified, 50% more absorbent than cotton, resists pilling, shrinkage, and tearing.
- Community endorsement
- Reddit buyers recommend Miiyu as a quality alternative to Aerie at Simons.
- Sustainability certifications
- Certified by EU Ecolabel and Canopy Dark Green Shirt; Higg MSI shows 50% lower emissions/water.
- Value
- At $12.99 ($7.99 in 5-pack), undercuts similar sustainable modal boyshorts by $2-$7.
- Washing care
- Machine wash cold on gentle cycle and dry low or air dry for best longevity.
Product record
- Title
- Solid Stretch Boyshort Tencel™ Modal
- Brand
- Miiyu
- Price
- 12.99 CAD
- Availability
- In stock
- Rating
- 4.8 stars, 29 reviews, scale 5
Image Analysis
4 images- 01

Product
Front view of a black stretch boyshort worn by a model; smooth single-piece fabric body with a slightly shinier elastic waistband. A matching black triangle bralette with thin adjustable straps and an elastic underband is also visible.
- Boyshort silhouetteLow-rise boyshort cut providing full front coverage with leg openings that sit low on the thigh and a continuous single-panel front
1 region
x 0.14 · y 0.58 · w 0.72 · h 0.36 (high) - Boyshort fabric finishSmooth, tightly knit stretch fabric with a matte appearance across the main body of the boyshort
1 region
x 0.20 · y 0.65 · w 0.60 · h 0.24 (high) - Waistband detailContrasting elastic waistband that appears slightly shinier than the main fabric and runs continuously around the waist
1 region
x 0.18 · y 0.52 · w 0.64 · h 0.10 (high) - Leg opening constructionNarrow folded hem at leg openings with a smooth seam, no visible decorative trim
1 region
x 0.14 · y 0.84 · w 0.72 · h 0.08 (high) - Visible braletteMatching black triangle bralette with soft cups, thin adjustable shoulder straps, and a smooth elastic underband
1 region
x 0.18 · y 0.12 · w 0.65 · h 0.32 (high) - Seam and panel linesVisible vertical seam lines at the inner cup edges of the bralette and subtle side seams at the boyshort hips
1 region
x 0.30 · y 0.18 · w 0.40 · h 0.24 (medium)
Other
Studio portrait crop showing the model from collarbone to upper thighs against a neutral pale background; soft, even lighting with mild shadows and the model's hands placed behind the back.
- Shot compositionCentered frontal crop from just above the collarbones to the upper thighs, model facing forward
1 region
x 0.00 · y 0.00 · w 1.00 · h 1.00 (high) - Background and lightingNeutral light beige studio background with soft, even lighting and gentle shadows along the model's contours
- Model poseModel stands with hands behind the back, causing slight inward rotation of the torso and visible clavicle highlights
1 region
x 0.10 · y 0.06 · w 0.80 · h 0.88 (medium) - Image crop limitationTop of the head is cropped out of frame; full legs not visible
Colors
matte black· boyshort main fabric#151312black with satin sheen· waistband and bralette underband#1E1C1B- Boyshort silhouetteLow-rise boyshort cut providing full front coverage with leg openings that sit low on the thigh and a continuous single-panel front
- 02

Product
Woman wearing a matching black soft-cup bra and mid-rise boyshort underwear; garments appear smooth, stretch fabric with a low sheen elastic band at the bra underbust and the shorts waist.
- Bra shapeSoft-cup triangle bra with a deep V neckline and narrow shoulder straps; cups are unpadded in appearance and converge to a wide elastic underbust band.
1 region
x 0.18 · y 0.06 · w 0.64 · h 0.30 (high) - Bra strapsNarrow adjustable shoulder straps attaching at the cup apex and running over the shoulders; straps are the same black color as the bra.
1 region
x 0.28 · y 0.02 · w 0.44 · h 0.18 (medium) - Bra material and finishSmooth, finely knit stretch fabric with a low satin-like sheen on the elastic underbust band and a matte appearance on cup faces.
1 region
x 0.18 · y 0.06 · w 0.64 · h 0.30 (high) - Boyshort silhouetteMid-rise boyshorts with full coverage across hips and a low leg opening; waistband is a slightly shinier elastic band distinct from the matte main fabric.
1 region
x 0.12 · y 0.42 · w 0.76 · h 0.35 (high) - Seams and hemsVisible narrow stitched leg hems and vertical center-front seam on the shorts; stitching is tonal and subtle.
1 region
x 0.22 · y 0.62 · w 0.54 · h 0.20 (medium) - Visible skin and fitGarments worn on a model; fabric conforms smoothly to the body with slight horizontal stretch lines at the waistband and underbust indicating elasticity.
Other
Studio shot showing a torso-on model against a neutral light beige background with soft, even lighting and minimal shadows.
- Shot compositionCropped portrait framing from upper thighs to just above the model head; model centered and facing forward.
1 region
x 0.00 · y 0.00 · w 1.00 · h 1.00 (high) - BackgroundUniform neutral light beige backdrop with no visible props.
1 region
x 0.00 · y 0.00 · w 1.00 · h 1.00 (high) - Lighting and shadowsSoft, diffused frontal lighting that produces gentle shadows under the model's arms and below the underbust, enhancing fabric texture.
Colors
deep black· bra fabric#1C0C02deep black· boyshorts main fabric#1D1A16- Bra shapeSoft-cup triangle bra with a deep V neckline and narrow shoulder straps; cups are unpadded in appearance and converge to a wide elastic underbust band.
- 03

Product
Rear view of a black boyshort-style brief on a model showing full rear coverage, a smooth knit body, an elasticized waistband, and curved leg openings with binding.
- Rear coverageFull rear coverage boyshort silhouette that extends to the upper thigh with a low-to-mid rise waistline at the natural hip.
1 region
x 0.14 · y 0.44 · w 0.72 · h 0.41 (high) - Main fabricSmooth, stretch knit fabric with a matte finish and no visible pattern or texture across the rear panel.
1 region
x 0.18 · y 0.52 · w 0.64 · h 0.32 (high) - WaistbandWide elasticized waistband that lies flat against the lower back; appears slightly shinier than the main fabric and smooth on the exterior.
1 region
x 0.20 · y 0.47 · w 0.60 · h 0.08 (high) - Leg openings and bindingCurved leg openings finished with narrow binding that follows the contour of the upper thigh and creates a clean edge.
2 regions
x 0.12 · y 0.74 · w 0.28 · h 0.16 (high); x 0.60 · y 0.74 · w 0.28 · h 0.16 (high) - Center back seam detailSlight vertical shaping seam implied at the center back of the brief where fabric panels meet.Partial
1 region
x 0.45 · y 0.56 · w 0.10 · h 0.20 (medium)
Other
Studio rear-shot of a model wearing the product; neutral light beige background, even soft lighting, and no visible packaging. A black bra is visible and the model is centered and cropped at the neck and mid-thigh.
- Model and poseFemale model shown from the rear standing upright with arms relaxed at sides, head turned slightly to the left and cropped above the mouth.
1 region
x 0.08 · y 0.02 · w 0.84 · h 0.96 (high) - Visible secondary garmentBlack bra with adjustable straps and a back hook closure visible above the waistband; appears as a separate garment, not packaging.
1 region
x 0.20 · y 0.06 · w 0.60 · h 0.20 (high) - Background and lightingNeutral beige studio background with soft, even lighting that produces gentle shadows along the model contours and minimal specular highlights.
- Image framingPortrait-oriented crop showing the model centered; top of head and lower legs are cropped from the frame.
Colors
matte black· body and waistband#1A1614- Rear coverageFull rear coverage boyshort silhouette that extends to the upper thigh with a low-to-mid rise waistline at the natural hip.
- 04

Product
Woman wearing a black triangle bralette and matching black boyshorts; both pieces are smooth knit fabric with slightly shinier elastic bands at the underbust and waist. The image shows the front view of the garments on a model from mid-thigh to just above the chin.
- Bralette shapeSoft triangle cups with a deep V front and thin adjustable shoulder straps; underbust band is a slightly shinier elastic separate from the cup fabric.
1 region
x 0.18 · y 0.06 · w 0.64 · h 0.28 (high) - Boyshort silhouetteLow-rise boyshorts with full coverage at the hips and a smooth front panel; leg openings have a clean hem without visible elastic trim.
1 region
x 0.12 · y 0.36 · w 0.76 · h 0.34 (high) - Waistband detailWaistband on the boyshorts appears as a slightly shinier, flat elastic band that contrasts subtly in finish with the matte body fabric.
1 region
x 0.18 · y 0.38 · w 0.64 · h 0.07 (high) - Fabric appearanceSmooth, fine-knit fabric with a matte finish on main panels and minimal visible seams; fabric lies flat against the body.
1 region
x 0.15 · y 0.10 · w 0.70 · h 0.58 (high) - Side seams and constructionSide seams are minimal and sit near the outer hip; no visible decorative stitching or lace.
2 regions
x 0.84 · y 0.40 · w 0.12 · h 0.28 (medium); x 0.04 · y 0.40 · w 0.12 · h 0.28 (medium)
Other
Studio shot of a torso-on model against a neutral light background; soft even lighting with slight shadowing to the model's left; image is vertically centered and cropped above the knees and below the chin.
- Model and poseModel stands facing forward with hands behind the back and shoulders relaxed; pose shows front view of garments.
1 region
x 0.00 · y 0.00 · w 1.00 · h 1.00 (high) - BackgroundUniform soft beige/light-gray studio background without props or patterns.
- Lighting and shadowSoft, diffuse lighting with a gentle shadow on the model's left side (image right), minimal specular highlights on elastic bands.
- Image cropVertical crop showing the model from mid-thigh to just above the chin; feet and full head are out of frame.
Colors
matte black· main fabric#1A1613sheen black· elastic bands#1C0C03- Bralette shapeSoft triangle cups with a deep V front and thin adjustable shoulder straps; underbust band is a slightly shinier elastic separate from the cup fabric.
Documents & Data
Customer Reviews
29 total29 reviews · out of 5
Garçonne modal
Fait bien et tissus confortable
Boyshort
These fit perfectly. Love the fabric and style.
Doux
Mon modèle et tissus préféré! J’espère que vous allez le garder! Taille habituelle.
Parfaite
L’élastique super et le tissus également… rien de négatif à dire! Modèle à conserver sur votre site à l’année! 😁
Confortable
Confo et belle coupe!
Parfait
Elle fait très bien. On est à l'aise. Aucune contrainte. Oui je recommanderais cet article.
en espérant qu elles vont durée
très bien
Solid stretch boyshort TENCEL™ modal
the fit and fabric are what i like. i would recommend these to someone but i don't normally discuss under garments with family or friends
Comfy
Soft and fit well
Comfy
Great comfy septic stays out
Modèle xs la grandeur d’un grand Small ou medieum
Beau modèle mais fait trop grand
Belle coupe
On oublie qu’on l’a porte. Belle qualité, je recommande.
Mini short
Satisfaite
So soft - perfect fit
I love these! They fit me perfectly, and the material is so soft and silky. I barely feel that I have them on. I did size up from my usual medium to a large and they are perfect.
love, love, love
recently received and although I have only worn a few times, I am most impressed. comfortable, and everything stays in place
Confortable
Tissu confortable
Très seyante !
J’aime le tissu et le confort de ce sous -vêtement.
Confortable!
Petite culotte confortable, répond à mes attentes.
As Promised
Comfortable and good fit
Confortable
La garçonne couvrante, couleur vibrante, confortable. Pas contre, ne pas oublier d'omettre la sécheuse.
Most comfortable underwear ever
Fits perfectly, so soft and comfortable. Doesn't roll down, well made quality material. would recommend 100%
Super comfortable, doesn’t ride up
Super comfortable, doesn’t ride up and soft
J’aurais préféré coton et non nylon
Taille est correcte
doux et souple
doux et souple
Fits small
I went by the size guide but these fit quite small. Consider sizing up
Heureuse découverte!
Heureuse découverte!
parfaite
parfaite
Exactement çà !
Pas de serrement au niveau des cuisses et de la taille. Super confortable.
Just okay
I got 5 of them cause I love hotshots but was trying to find something outside VS. They fit okay, however, I can tell that they won’t last very well. Some of them already came with tiny snags, and I can’t be bothered to return undergarments. So now, they’re my back up ones.
Reddit Insights
1 threads · r/FrugalFemaleFashionCAA Reddit user on r/FrugalFemaleFashionCA recommends Miiyu underwear as a good quality and affordable option.
One user loves the Miiyu line and another finds the price decent.
Themes
Use Cases
- Everyday underwear
Compared To
vs Aerie
Both Aerie and Miiyu are recommended for good quality affordable underwear.
Source Threads
User recommends Miiyu underwear from Simon's as good quality and affordable
I really love the Miiyu line from Simon's.
u/lateoctoberr/FrugalFemaleFashionCAView thread →