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[Ksenia 1]
[Ksenia 1]
Sieve Non-Wire Bra in Black
[Ksenia 1]
[Hannah 3+]
[Hannah 3+]
Sieve Non-Wire Bra in Black
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Sieve Non-Wire Bra

Rated 4.6 out of 5
Based on 3269 reviews

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. 

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Free U.S. shipping on orders over $100. Easy returns.

Fit

  • 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.

Fabric + Care

  • Size Chart
  • Made from a sheer Belgian power micromesh — nipples are visible
  • 74% Polyamide (Nylon) 26% Elastane (Spandex)
  • Wireless
  • Hand wash in cold water, dry flat 

FAQ

  • All full-priced, unworn items, with tags attached and in their original packaging are eligible for return or exchange within 30 days of placing your order.
  • Please note, packs must be returned in full. We do not accept partial returns of packs.
  • Want to know our full returns policies? Here you go.
  • Want more info about shipping, materials or care instructions? Here!

    Q’s on fit or sizing? Email us at hello@negativeunderwear.com

Pair it with ->

Sieve G-String in Black Sieve G-String in Black (alternate view) Sieve G-String in Black $30
Cotton French Cut Brief in Black (Pack) Cotton French Cut Brief in Black (Pack) (alternate view) Cotton French Cut Brief in Black (Pack) $58 +
Whipped Boy Short in Black Whipped Boy Short in Black (alternate view) Whipped Boy Short in Black $45 +
Sieve High-Waist Brief in Black Sieve High-Waist Brief in Black (alternate view) Sieve High-Waist Brief in Black $45 +
Write a Review
average rating 4.6 out of 5
Based on 3269 reviews
  • 5 Stars
    2526 Reviews
  • 4 Stars
    346 Reviews
  • 3 Stars
    198 Reviews
  • 2 Stars
    114 Reviews
  • 1 Star
    85 Reviews
90% of reviewers would recommend this product to a friend
Overall
Rated 0 on a scale of minus 2 to 2, where minus 2 is Hated it, 0 is Meh and 2 is Loved it
Quality
Rated 4 out of 5
Comfort
Rated 4 out of 5
3269 Reviews
Reviewed by Lacey M.
Verified Buyer
Review posted
Sieve Non-Wire Bra in Buff
Reviewing
Sieve Non-Wire Bra in Buff
I recommend this product
Rated 5 out of 5
Size Purchased
1
How it Fits
True to Size
Age Range
25 - 34
Bra Size
30B

Should’ve bought sooner!

I looked at this bra a few times before making a purchase. Now I’m wondering what took me so long. This is the only bra I need in my life. For reference (simply because I always find it helpful) I’m usually a 30B, went with Size 1, and hook it on the tightest setting.

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Overall
Rated 2 on a scale of minus 2 to 2, where minus 2 is Hated it, 0 is Meh and 2 is Loved it
Quality
Rated 5 out of 5
Comfort
Rated 5 out of 5
Was this helpful?
Reviewed by Cassie P.
Verified Buyer
Review posted
Sieve Non-Wire Bra in Navy
Reviewing
Sieve Non-Wire Bra in Navy
I recommend this product
Rated 5 out of 5
Size Purchased
2
How it Fits
True to Size
Age Range
35 - 44
Bra Size
34D

Super sexy. Comfy.

I love wearing this. Nice support too!

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Overall
Rated 2 on a scale of minus 2 to 2, where minus 2 is Hated it, 0 is Meh and 2 is Loved it
Quality
Rated 5 out of 5
Comfort
Rated 5 out of 5
Was this helpful?
Reviewed by Lisa S.
Verified Buyer
Review posted
Sieve Non-Wire Bra in Buff
Reviewing
Sieve Non-Wire Bra in Buff
I recommend this product
Rated 5 out of 5
Size Purchased
3
How it Fits
True to Size
Age Range
25 - 34
Bra Size
34DD/E

Amazing

Most comfortable bra I’ve ever worn! Will definitely be ordering more colors and styles

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Overall
Rated 2 on a scale of minus 2 to 2, where minus 2 is Hated it, 0 is Meh and 2 is Loved it
Quality
Rated 5 out of 5
Comfort
Rated 5 out of 5
Was this helpful?

Non-Wire Bra Sizing

Non-Wire Bra Sizing Size Chart

* Non-wire bra sizing can vary by preference and if you're toward the top of a size range and prefer more coverage, you may want to size up. For styles available in + sizes (designed with additional support details for our larger cup customers), we find DD's can be on the cusp - if you prefer more coverage and support, we suggest the + bra equivalent for your band size.

Btw, the size nomenclature has changed for Bra Tops. Here's the conversion:
XS=0, S=1, M=2, L=3, XL=4, XXL=5

Q’s about sizing or fit? Email us at hello@negativeunderwear.com

@negativeunderwear