Sieve Non-Wire Bra
Thumbnail image #1 of Sieve Non-Wire Bra in Buff [Morgan 2]
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[Morgan 2]
[Morgan 2]
[Morgan 2]
[Vitoria 3+]
[Vitoria 3+]
[Vitoria 3+]
[Vitoria 3+]

Sieve Non-Wire Bra

Sieve Non-Wire Bra

$70
$70
$70
$70

Our best selling bra for a reason.


The most supportive of our wireless bras. Great shape, naturally smoothing, airy light and sexy sheer — Belgian micromesh might just be magic.
BabeBlackBuffEspressoNEWShellWhite
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Size
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Size Guide
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Low stock

Our best selling bra for a reason.


The most supportive of our wireless bras. Great shape, naturally smoothing, airy light and sexy sheer — Belgian micromesh might just be magic.
  • OEKO-TEX®
STANDARD 100
  • Machine Washable
  • Details
  • Fabric + Care
  • Easy Returns
  • Size Chart
  • Use this as a guide. Preference is a huge factor — if you’re near the top of a size range and/or prefer more coverage, you may want to size up.
Hand Wash
Hand wash in cold water and lay flat to dry to preserve the delicate micromesh fabric and fit.
Built for A Through G
The Sieve Non-Wire Bra is designed to provide comfortable, flexible support across a wide range of cup sizes. This style supports A through G cups through our standard numeric sizing (0–5) and extended cup sizing (1+–5+). Refer to our size chart to find your best fit.
Complete the Set
Pair the Sieve Non-Wire Bra with our Sieve Thong or Sieve String Thong for a coordinated everyday set. Made from the same sheer Belgian power micromesh, each piece offers lightweight breathability, a smooth fit, and barely-there comfort.
Fabric + Fit
Crafted from sheer Belgian power micromesh (74% nylon, 26% elastane), the Sieve Non-Wire Bra delivers lightweight, breathable comfort with flexible wireless support. Certified to OEKO-TEX® STANDARD 100, the fabric offers a smooth, barely-there feel with a transparent finish—nipples are visible. Rated 4.6 stars by 5,934 reviewers, this customer favorite is designed for everyday wear. To preserve the delicate fabric and fit, hand wash in cold water and dry flat.
FAQs
Q: What cup sizes does the Sieve Non-Wire Bra support?
A: The Sieve Non-Wire Bra supports A through G cups, with standard sizes 0–5 and extended cup sizes 1+ through 5+. Refer to our size chart to find your best fit.
Q: Is the Sieve Non-Wire Bra see-through?
A: Yes, the Sieve Non-Wire Bra is made from sheer Belgian power micromesh, so nipples are visible. The lightweight, breathable fabric provides a barely-there feel with comfortable wireless support.
Q: Can I machine wash this bra?
A: We recommend hand washing the Sieve Non-Wire Bra in cold water and laying it flat to dry. Machine washing is not recommended, as gentle care helps preserve the delicate micromesh fabric and fit.
Q: How does the 2-pack discount work?
A: When you purchase the Sieve Non-Wire Bra as a 2-pack, you'll receive a discounted price per bra compared to purchasing them individually. Simply select the 2-pack option when shopping.
Q: Is this bra padded or lined?
A: No, the Sieve Non-Wire Bra is unpadded and unlined, featuring sheer Belgian power micromesh for a lightweight, barely-there feel. Nipples are visible through the fabric.
  • Made from a sheer Belgian power micromesh — nipples are visible
  • A caramel-y sunrise desert sands affogato tone
  • 74% Polyamide (Nylon) 26% Elastane (Spandex)
  • Wireless
  • Certified Safe: OEKO-TEX® STANDARD 100 #23.HCN.86212 by Hohenstein HTTI
  • Hand wash in cold water, dry flat
  • All full-priced items (including packs) are eligible for return or exchange within 30 days of the original purchase date.
  • All last chance items marked with "Final Sale" are not eligible for return or exchange.
  • Given the delicate nature of what we sell, items must be unworn, unwashed, undamaged, with tags attached and in original packaging to proceed with a return.
  • Packs must be returned in full.
  • To help ensure your items are eligible for a return, please check out ‘Try-On Tips’ in our Help Center.
  • Want more info about shipping, materials or care instructions? Here!

    Q’s on fit or sizing? Email us at hello@negativeunderwear.com
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Detail view of Sieve Non-Wire Bra in Buff for sizer
4.6
Rated 4.6 out of 5 stars
Based on 5,952 reviews
5,952 reviews
  • AT
    Verified Buyer
    Size Purchased 2
    How it Fits A Little Small
    Age Range 45 - 54
    Bra Size 36B
    3 minutes ago
    Size Purchased 2
    How it Fits A Little Small
    Age Range 45 - 54
    Bra Size 36B
    Reviewing
    Sieve Non-Wire Bra in Black + Buff (2-Pack)
    Rated 4 out of 5 stars
    Cool and comfortable

    Material is great for staying cool. I run sweaty so I appreciate the extra ventilation from the fabric. I think these run the same size as the Whipped bras, i.e. size up.

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