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[Vitoria 36DD]
[Vitoria 36DD]
[Vitoria 36DD]
Shown here with our Sieve Thong in Slate [Paula 32C]
Honeycomb micromesh is surprisingly supportive [Paula 32C]
Our signature micromesh is sexy yet comfortable
flat
Thumbnail image #1 of Sieve Demi Bra in Slate [Vitoria 36DD]
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Thumbnail image #3 of Sieve Demi Bra in Slate [Vitoria 36DD]
Thumbnail image #4 of Sieve Demi Bra in Slate [Paula 32C]
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Thumbnail image #6 of Sieve Demi Bra in Slate
[Vitoria 36DD]
[Vitoria 36DD]
[Vitoria 36DD]
Shown here with our Sieve Thong in Slate [Paula 32C]
Honeycomb micromesh is surprisingly supportive [Paula 32C]
Our signature micromesh is sexy yet comfortable

Sieve Demi Bra

4.7
Rated 4.7 out of 5 stars
1,047 Reviews

None of the padding. All the support.


Airy light and surprisingly strong — it’s not impossible, we made it.
BlackSlateBuffPeach

We’d love to know what size you want us to make next - email us so we can add your info to our list!

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

Fit

  • Made from a sheer Belgian power micromesh — nipples are visible
  • Underwire bra with max comfort
  • Velvety plush elastic underband
  • Heat transferred care label = no itchy tags

Fabric + Care

  • Sheer Belgian power micromesh is surprisingly supportive
  • Unpadded and unlined — nipples can show depending on the person or the shirt
  • 74% Polyamide (Nylon) 26% Elastane (Spandex)
  • Steely blue-grey tone
  • 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

Looks good with ->

Sieve Thong in Slate Sieve Thong in Slate (alternate view) Sieve Thong in Slate $32 +
Sieve High-Waist Brief in Slate Sieve High-Waist Brief in Slate (alternate view) Sieve High-Waist Brief in Slate $45 +
Sieve Brief in Slate Sieve Brief in Slate (alternate view) Sieve Brief in Slate $35 +
Sieve String Thong in Slate Sieve String Thong in Slate (alternate view) Sieve String Thong in Slate $30
4.7
Rated 4.7 out of 5 stars
Based on 1,047 reviews
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1,047 reviews
  • Leah P.
    Verified Buyer
    Size Purchased 38C
    How it Fits True to Size
    Age Range 35 - 44
    45 minutes ago
    Size Purchased 38C
    How it Fits True to Size
    Age Range 35 - 44
    Sieve Demi Bra in Buff
    Reviewing
    Sieve Demi Bra in Buff
    Rated 5 out of 5 stars
    My new everyday bra

    Love this bra it’s sexy and comfortable!

    Was this helpful?
  • Leah P.
    Verified Buyer
    Size Purchased 38C
    How it Fits True to Size
    Age Range 35 - 44
    46 minutes ago
    Size Purchased 38C
    How it Fits True to Size
    Age Range 35 - 44
    Sieve Demi Bra in Black
    Reviewing
    Sieve Demi Bra in Black
    Rated 5 out of 5 stars
    Sexy luxurious

    Great bra! Looks sexy and is a comfortable fit.

    Was this helpful?
  • Lana P.
    Verified Buyer
    Size Purchased 38C
    How it Fits True to Size
    Age Range 45 - 54
    1 hour ago
    Size Purchased 38C
    How it Fits True to Size
    Age Range 45 - 54
    Sieve Demi Bra in Buff
    Reviewing
    Sieve Demi Bra in Buff
    Rated 5 out of 5 stars
    Very comfortable!

    This bra is perfect. I’ll probably go back and order in every color. I found my new “go to” bra. I ordered a 40C.

    Was this helpful?
  • Becky C.
    Verified Buyer
    Size Purchased 32DDD
    How it Fits True to Size
    Age Range 45 - 54
    19 hours ago
    Size Purchased 32DDD
    How it Fits True to Size
    Age Range 45 - 54
    Sieve Demi Bra in Buff
    Reviewing
    Sieve Demi Bra in Buff
    Rated 5 out of 5 stars
    Thoughtfully Constructed

    I am surprised by this bra! I am a hard to find size, and a hard to please customer. I want it all from my bras. Support. Comfort. Aesthetics. This one has it all. I do agree with other commenters that the lack of the third hook on the size 32 is lamentable, so much so that I exchanged this size for a sister size in a 34 just to get that wider side and the third hook. Thanks for such thoughtfully constructed undergarments, Negative!

    Was this helpful?
  • Becky C.
    Verified Buyer
    Size Purchased 32DDD
    How it Fits True to Size
    Age Range 45 - 54
    19 hours ago
    Size Purchased 32DDD
    How it Fits True to Size
    Age Range 45 - 54
    Sieve Demi Bra in Black
    Reviewing
    Sieve Demi Bra in Black
    Rated 5 out of 5 stars
    Surprised!

    I am surprised by this bra! I am a hard to find size, and a hard to please customer. I want it all from my bras. Support. Comfort. Aesthetics. This one has it all. I do agree with other commenters that the lack of the third hook on the size 32 is lamentable, so much so that I exchanged this size for a sister size in a 34 just to get that wider side and the third hook. Thanks for such thoughtfully constructed undergarments, Negative!

    Was this helpful?
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Detail view of Sieve Demi Bra in Slate for sizer

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