
Miiyu
Astra Wireless Push-Up Bra
The Astra Wireless Push-Up Bra by Miiyu by Simons is a women's wireless bra with moulded, seamless cups and generous push-up padding, designed in Canada. It provides moderate support and features adjustable straps at the back, a two-hook closure, and a smooth, low-center plunge neckline. Constructed from soft, stretch recycled nylon-blend microfibre, this bra is suitable for everyday wear under T-shirts and pairs with a matching high-rise brief (sold separately).
- Material
- recycled nylon-blend microfibre
- Gender
- female
- Style
- casual, minimal
- Category
- Apparel & Accessories > Clothing > Underwear & Socks > Bras
Specifications
Wireless push-up bra with moulded cups and adjustable straps, made from soft recycled nylon-blend microfibre.
Moulded wireless cups with generous push-up padding, adjustable straps, two-hook closure, moderate support, perfect for wearing under T-shirts.
- Material
- recycled nylon-blend microfibre
- Style
- casual, minimal
- Occasion
- everyday, casual
- Gender
- female
- Age Group
- adult
- Condition
- new
- Category
- Apparel & Accessories > Clothing > Underwear & Socks > Bras
Additional Attributes
- Soft, stretch recycled nylon-blend microfibre
- Moulded wireless cups with generous push-up padding
- Adjustable straps at back
- Two-hook closure behind
- Moderate support
- Perfect for wearing under T-shirts
- Matching panty sold separately
- Exclusive design by Simons in Canada
Product Insights
Miiyu's Astra Wireless Push-Up Bra combines eco-conscious construction—recycled nylon that cuts CO2 by 80% and water by 90%—with 22% more breathability than conventional fabrics, delivering a seamless, smooth fit under tees. The tradeoff: its wireless, permanently padded push-up design offers only moderate support, less lift than underwire for D+ cup sizes.
Verified claims
- Breathability
- Recycled nylon microfibre breathes 22% more than conventional nylon blends.
- Environmental savings
- Recycled nylon blend reduces CO₂ up to 80% and water up to 90% vs virgin nylon.
- Large cup support
- Support is moderate and suitable for all-day wear; while it provides lift, it may not match the support of an underwire bra for larger cup sizes like 38D.
- Padding
- Push-up padding is built into the moulded cup and cannot be removed.
- Seam visibility
- The moulded cups and soft microfiber are designed to lie smooth under T-shirts, but the bra is not completely seamless; it has minimal seams at the strap attachments and band, and one buyer reported the cup fabric wrinkled and became obvious under T-shirts.
- Strap length
- One buyer who ordered her regular size reports the straps were not long enough for her torso.
Product record
- Title
- Astra Wireless Push-Up Bra
- Brand
- Miiyu
- Price
- 39 CAD
- Availability
- In stock
Buying Guide
1 comparison · 7 sourcesUses
A smooth layer under T-shirts
Miiyu presents this wireless push-up bra as a pick for wearing under T-shirts. This is the merchant's suitability claim rather than a reported wear experience, but it points to the intended everyday use.[1]
Product comparison
Compared within this brand.
| Astra Wireless Push-Up Bra: Choose this if you want a wire-free bra that still delivers shaping, thanks to moulded cups with generous push-up padding, a deep plunge neckline, and smooth, seamless matte cups in a soft, stretch recycled nylon blend. It offers moderate support, adjustable back straps, a two-hook back closure, and a wide integrated underband, in band sizes 32 to 38 with A to D cups and five colors, with matching briefs available. Note that support is rated moderate, so it may not suit those seeking firm lift.[1,2,3] | Aurora Wireless Bra: Choose this if you strictly avoid underwire and want an ultra-light, seamless wireless bra for all-day work or travel — reviewers say it's so comfortable you barely notice it, with smooth seams that disappear under tight t-shirts, molded cups, adjustable crossed straps, and a hook-and-eye closure. Note that the band runs small, so many reviewers size up to avoid a tight fit, and the straps may lack sturdiness for larger busts. Some also find the fabric traps heat in hot weather, and it may not provide enough structure if you're used to underwire support.[4,5,6] | Vela Wireless Bra: Choose this if you want a wire-free, moderate-support bra for everyday wear: reviews describe it as seamless and invisible under light tops and white tees, with all-day comfort and just enough lift and definition for A and B cups. It has foam-moulded wireless cups, a cotton lining, thin adjustable straps, and a two-hook back closure, offered in sizes 32A through 38D and eleven colors. Note that reviews report the wireless cut often lacks cup depth for C+ cups or mature busts, with side spillage, and the thin straps may dig in if you need more support.[7] |
Image Analysis
3 images- 01

Product
Front-facing closeup of a molded, seamless plunge bra and matching brief on a model; visible features include smooth matte cups, a low center V, thin shoulder straps, and a wide integrated underband.
- Molded cupsSmooth, contoured molded cups with a seamless finish and no visible stitching on the cup surfaces.
1 region
x 0.12 · y 0.20 · w 0.76 · h 0.28 (high) - Plunge centerLow center V between the cups creating a deep plunge neckline.
1 region
x 0.36 · y 0.28 · w 0.28 · h 0.16 (high) - UnderbandWide integrated underband with the same smooth fabric and no visible underwire seam along the lower edge.
1 region
x 0.12 · y 0.44 · w 0.76 · h 0.10 (high) - Shoulder strapsThin shoulder straps of the same color and material attaching at the outer cup with visible stitched join; strap hardware not visible in the crop.Partial
2 regions
x 0.60 · y 0.10 · w 0.18 · h 0.22 (high); x 0.14 · y 0.12 · w 0.16 · h 0.22 (medium) - Side seam detailVertical side seam visible on the model's right side where cup meets side panel.
1 region
x 0.72 · y 0.30 · w 0.10 · h 0.26 (high) - Matching brief visibleMatching high-rise brief waistband and upper front panel in the same fabric and color as the bra, visible at the lower frame.
1 region
x 0.18 · y 0.68 · w 0.64 · h 0.18 (high)
Other
Image shows a cropped studio shot of a model from chin to hips against a light neutral wall with soft even lighting and subtle shadowing; model hair falls over the left shoulder.
- Shot compositionCropped vertical studio portrait showing the model from just below the chin to the upper thighs, centered on torso.
- Background and lightingPlain off-white wall background with soft, even lighting and faint shadows along the model's left side.
- Model presencePhotographed on a live model; visible features include neck, shoulders, torso, arms and partial hips.
- Hair detailLong dark wavy hair draped over the left shoulder and chest area.
1 region
x 0.02 · y 0.06 · w 0.40 · h 0.40 (high)
Colors
dusty rose· bra main fabric#C58682dusty rose· brief waistband and upper panel- Molded cupsSmooth, contoured molded cups with a seamless finish and no visible stitching on the cup surfaces.
- 02

Product
Front view of a two-piece underwear set on a seated model showing a wireless push-up style bra with deep V center and matching high-waist briefs in a matte dusty rose fabric.
- Bra cup shapeMolded, seamless cups with a deep V-shaped plunge at the center front and smooth, rounded outer cup contour.
1 region
x 0.26 · y 0.14 · w 0.48 · h 0.29 (high) - Bra band constructionWide underbust band that continues smoothly from the cups without visible stitching or closures on the visible front side.
1 region
x 0.30 · y 0.31 · w 0.42 · h 0.08 (high) - Bra strapsThin, adjustable-looking shoulder straps attached at the cup outer edges, made from the same matte fabric and color as the cups.
2 regions
x 0.58 · y 0.07 · w 0.18 · h 0.20 (high); x 0.30 · y 0.08 · w 0.13 · h 0.18 (high) - Briefs styleHigh-rise briefs with a smooth front panel and visible elasticized trim at the waist and leg openings, matching the bra color and finish.
1 region
x 0.30 · y 0.46 · w 0.40 · h 0.32 (high) - Fabric finishMatte, smooth fabric with no visible pattern or texture, appearing slightly stretchable and form-fitting.
- Visible seamsNarrow stitched seams visible along the briefs' side panels and leg openings; bra appears largely seam-free on front cups.
1 region
x 0.46 · y 0.59 · w 0.28 · h 0.32 (high) - Neckline and coverageLow plunge neckline created by cup cut with central V, offering cleavage-enhancing coverage.
1 region
x 0.33 · y 0.16 · w 0.34 · h 0.20 (high)
Other
Seated model against a neutral light background on a textured rug; three-quarter crop framing from chin to upper thighs with soft studio lighting and subtle shadows.
- Model pose and framingSeated model shown from slightly above mid-torso to upper thighs, hands resting on crossed legs; head partially cropped so chin and lower face are visible.
1 region
x 0.00 · y 0.00 · w 1.00 · h 1.00 (low) - Background and surfacePlain, light-colored wall background with a soft, textured rug or carpet visible under the model.
2 regions
x 0.00 · y 0.70 · w 0.40 · h 0.30 (high); x 0.60 · y 0.00 · w 0.40 · h 0.60 (high) - Lighting and shadowEven studio lighting with soft shadows under the model's arms and along the torso contours, minimal specular highlights on fabric.
Colors
dusty rose· bra cups and band#C68B83dusty rose· bra strapsdusty rose· briefs#B7786E- Bra cup shapeMolded, seamless cups with a deep V-shaped plunge at the center front and smooth, rounded outer cup contour.
- 03

Product
Rear view of a two-piece underwear set on a model showing the back of a wireless-style bra with adjustable straps and a hook-and-eye closure, and a matching high-rise brief with elasticized edges.
- Back band and closureSmooth fabric back band with a centered hook-and-eye closure panel; closure panel is rectangular with visible vertical stitching where hooks attach and the fabric color matches the band.
1 region
x 0.34 · y 0.27 · w 0.32 · h 0.11 (high) - Adjustable shoulder strapsThin shoulder straps attach to the back band with small metal or plastic rings and include slide adjusters on each strap; straps are the same fabric color as the band.
2 regions
x 0.18 · y 0.08 · w 0.14 · h 0.30 (high); x 0.68 · y 0.08 · w 0.14 · h 0.30 (high) - Matching high-rise briefHigh-rise brief in the same smooth knit fabric and color as the bra, with a straight elasticized waistband and narrow finished leg openings with visible topstitching.
1 region
x 0.12 · y 0.56 · w 0.76 · h 0.36 (high) - Seam and edge finishNarrow folded and stitched edges at the waistband and leg openings on the brief and similar narrow seam finish at the bottom edge of the bra band.
2 regions
x 0.12 · y 0.56 · w 0.76 · h 0.20 (high); x 0.34 · y 0.27 · w 0.32 · h 0.08 (high) - Small metallic rings at strap attachmentsSmall rounded metal rings where the straps meet the back band, appearing slightly reflective and warmer-toned compared with the fabric.
2 regions
x 0.30 · y 0.18 · w 0.06 · h 0.06 (high); x 0.64 · y 0.18 · w 0.06 · h 0.06 (high)
Other
Studio product shot showing a model from behind against a neutral light background with soft even lighting and minimal shadows.
- Model and poseFemale model shown from the rear with arms relaxed at sides and head turned slightly to the left; hair falls over the right shoulder.
1 region
x 0.00 · y 0.00 · w 1.00 · h 1.00 (high) - Background and lightingEven, neutral off-white background with soft studio lighting producing gentle, natural shadows along the model's contours.
- Image framingVertical framing centered on the model's torso and hips; top of the head and lower thighs are cropped out of the frame.
Colors
dusty rose· bra fabricdusty rose· brief fabric#C2867Dantique gold· strap attachment rings#DA9057- Back band and closureSmooth fabric back band with a centered hook-and-eye closure panel; closure panel is rectangular with visible vertical stitching where hooks attach and the fabric color matches the band.
Variants
80 SKUs| SKU | Title | Price | Avail |
|---|---|---|---|
| 4528245 | Astra Wireless Push-Up Bra - Black - 32-A | CA$39.00 | Yes |
| 4528246 | Astra Wireless Push-Up Bra - Black - 32-B | CA$39.00 | Yes |
| 4528247 | Astra Wireless Push-Up Bra - Black - 32-C | CA$39.00 | Yes |
| 4583424 | Astra Wireless Push-Up Bra - Black - 32-D | CA$39.00 | Yes |
| 4528248 | Astra Wireless Push-Up Bra - Black - 34-A | CA$39.00 | Yes |
| 4528249 | Astra Wireless Push-Up Bra - Black - 34-B | CA$39.00 | Yes |
| 4528250 | Astra Wireless Push-Up Bra - Black - 34-C | CA$39.00 | Yes |
| 4528251 | Astra Wireless Push-Up Bra - Black - 34-D | CA$39.00 | Yes |
| 4528252 | Astra Wireless Push-Up Bra - Black - 36-A | CA$39.00 | Yes |
| 4528253 | Astra Wireless Push-Up Bra - Black - 36-B | CA$39.00 | Yes |
| 4528254 | Astra Wireless Push-Up Bra - Black - 36-C | CA$39.00 | Yes |
| 4528255 | Astra Wireless Push-Up Bra - Black - 36-D | CA$39.00 | Yes |
| 4583425 | Astra Wireless Push-Up Bra - Black - 38-A | CA$39.00 | Yes |
| 4528256 | Astra Wireless Push-Up Bra - Black - 38-B | CA$39.00 | Yes |
| 4528257 | Astra Wireless Push-Up Bra - Black - 38-C | CA$39.00 | Yes |
| 4528258 | Astra Wireless Push-Up Bra - Black - 38-D | CA$39.00 | Yes |
| 4528259 | Astra Wireless Push-Up Bra - Beige/greige - 32-A | CA$39.00 | Yes |
| 4528260 | Astra Wireless Push-Up Bra - Beige/greige - 32-B | CA$39.00 | Yes |
| 4528261 | Astra Wireless Push-Up Bra - Beige/greige - 32-C | CA$39.00 | Yes |
| 4583426 | Astra Wireless Push-Up Bra - Beige/greige - 32-D | CA$39.00 | Yes |
| 4528262 | Astra Wireless Push-Up Bra - Beige/greige - 34-A | CA$39.00 | Yes |
| 4528263 | Astra Wireless Push-Up Bra - Beige/greige - 34-B | CA$39.00 | Yes |
| 4528264 | Astra Wireless Push-Up Bra - Beige/greige - 34-C | CA$39.00 | Yes |
| 4528265 | Astra Wireless Push-Up Bra - Beige/greige - 34-D | CA$39.00 | Yes |
| 4528266 | Astra Wireless Push-Up Bra - Beige/greige - 36-A | CA$39.00 | Yes |
| 4528267 | Astra Wireless Push-Up Bra - Beige/greige - 36-B | CA$39.00 | Yes |
| 4528268 | Astra Wireless Push-Up Bra - Beige/greige - 36-C | CA$39.00 | Yes |
| 4528269 | Astra Wireless Push-Up Bra - Beige/greige - 36-D | CA$39.00 | Yes |
| 4583427 | Astra Wireless Push-Up Bra - Beige/greige - 38-A | CA$39.00 | Yes |
| 4528270 | Astra Wireless Push-Up Bra - Beige/greige - 38-B | CA$39.00 | Yes |
| 4528271 | Astra Wireless Push-Up Bra - Beige/greige - 38-C | CA$39.00 | Yes |
| 4528272 | Astra Wireless Push-Up Bra - Beige/greige - 38-D | CA$39.00 | Yes |
| 4658305 | Astra Wireless Push-Up Bra - Gingham - 32-A | CA$39.00 | Yes |
| 4658306 | Astra Wireless Push-Up Bra - Gingham - 32-B | CA$39.00 | Yes |
| 4658307 | Astra Wireless Push-Up Bra - Gingham - 32-C | CA$39.00 | Yes |
| 4658308 | Astra Wireless Push-Up Bra - Gingham - 32-D | CA$39.00 | Yes |
| 4658309 | Astra Wireless Push-Up Bra - Gingham - 34-A | CA$39.00 | Yes |
| 4658310 | Astra Wireless Push-Up Bra - Gingham - 34-B | CA$39.00 | Yes |
| 4658311 | Astra Wireless Push-Up Bra - Gingham - 34-C | CA$39.00 | Yes |
| 4658312 | Astra Wireless Push-Up Bra - Gingham - 34-D | CA$39.00 | Yes |
| 4658313 | Astra Wireless Push-Up Bra - Gingham - 36-A | CA$39.00 | Yes |
| 4658314 | Astra Wireless Push-Up Bra - Gingham - 36-B | CA$39.00 | Yes |
| 4658315 | Astra Wireless Push-Up Bra - Gingham - 36-C | CA$39.00 | Yes |
| 4658316 | Astra Wireless Push-Up Bra - Gingham - 36-D | CA$39.00 | Yes |
| 4658317 | Astra Wireless Push-Up Bra - Gingham - 38-A | CA$39.00 | Yes |
| 4658318 | Astra Wireless Push-Up Bra - Gingham - 38-B | CA$39.00 | Yes |
| 4658319 | Astra Wireless Push-Up Bra - Gingham - 38-C | CA$39.00 | Yes |
| 4658320 | Astra Wireless Push-Up Bra - Gingham - 38-D | CA$39.00 | Yes |
| 4658321 | Astra Wireless Push-Up Bra - Light Blue - 32-A | CA$39.00 | Yes |
| 4658322 | Astra Wireless Push-Up Bra - Light Blue - 32-B | CA$39.00 | Yes |
| 4658323 | Astra Wireless Push-Up Bra - Light Blue - 32-C | CA$39.00 | Yes |
| 4658324 | Astra Wireless Push-Up Bra - Light Blue - 32-D | CA$39.00 | Yes |
| 4658325 | Astra Wireless Push-Up Bra - Light Blue - 34-A | CA$39.00 | Yes |
| 4658326 | Astra Wireless Push-Up Bra - Light Blue - 34-B | CA$39.00 | Yes |
| 4658327 | Astra Wireless Push-Up Bra - Light Blue - 34-C | CA$39.00 | Yes |
| 4658328 | Astra Wireless Push-Up Bra - Light Blue - 34-D | CA$39.00 | Yes |
| 4658329 | Astra Wireless Push-Up Bra - Light Blue - 36-A | CA$39.00 | Yes |
| 4658330 | Astra Wireless Push-Up Bra - Light Blue - 36-B | CA$39.00 | Yes |
| 4658331 | Astra Wireless Push-Up Bra - Light Blue - 36-C | CA$39.00 | Yes |
| 4658332 | Astra Wireless Push-Up Bra - Light Blue - 36-D | CA$39.00 | Yes |
| 4658333 | Astra Wireless Push-Up Bra - Light Blue - 38-A | CA$39.00 | Yes |
| 4658334 | Astra Wireless Push-Up Bra - Light Blue - 38-B | CA$39.00 | Yes |
| 4658335 | Astra Wireless Push-Up Bra - Light Blue - 38-C | CA$39.00 | Yes |
| 4658336 | Astra Wireless Push-Up Bra - Light Blue - 38-D | CA$39.00 | Yes |
| 4657573 | Astra Wireless Push-Up Bra - Mauve - 32-A | CA$39.00 | Yes |
| 4657574 | Astra Wireless Push-Up Bra - Mauve - 32-B | CA$39.00 | Yes |
| 4657575 | Astra Wireless Push-Up Bra - Mauve - 32-C | CA$39.00 | Yes |
| 4657576 | Astra Wireless Push-Up Bra - Mauve - 32-D | CA$39.00 | Yes |
| 4657577 | Astra Wireless Push-Up Bra - Mauve - 34-A | CA$39.00 | Yes |
| 4657578 | Astra Wireless Push-Up Bra - Mauve - 34-B | CA$39.00 | Yes |
| 4657579 | Astra Wireless Push-Up Bra - Mauve - 34-C | CA$39.00 | Yes |
| 4657580 | Astra Wireless Push-Up Bra - Mauve - 34-D | CA$39.00 | Yes |
| 4657581 | Astra Wireless Push-Up Bra - Mauve - 36-A | CA$39.00 | Yes |
| 4657582 | Astra Wireless Push-Up Bra - Mauve - 36-B | CA$39.00 | Yes |
| 4657583 | Astra Wireless Push-Up Bra - Mauve - 36-C | CA$39.00 | Yes |
| 4657584 | Astra Wireless Push-Up Bra - Mauve - 36-D | CA$39.00 | Yes |
| 4657585 | Astra Wireless Push-Up Bra - Mauve - 38-A | CA$39.00 | Yes |
| 4657586 | Astra Wireless Push-Up Bra - Mauve - 38-B | CA$39.00 | Yes |
| 4657587 | Astra Wireless Push-Up Bra - Mauve - 38-C | CA$39.00 | Yes |
| 4657588 | Astra Wireless Push-Up Bra - Mauve - 38-D | CA$39.00 | Yes |
Documents & Data
Customer Reviews
2 total2 reviews · out of 5
Fabric wrinkles
Fabric that covers the cups is kind of loose so it wrinkles and becomes quite obvious under tshirts. I returned it.
Not for me
Pretty and quite padded. Ordered my regular size and straps were not long enough for my torso.