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Sieve is our signature material for semi-sheer vibes [Ksenia XS]
Low rise cut with a plush elastic band means no digging or pinching [Ksenia XS]
A low rise cheeky brief in Black honeycomb micromesh [Ksenia XS]
flat
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Buy more, save money
Sieve is our signature material for semi-sheer vibes [Ksenia XS]
Low rise cut with a plush elastic band means no digging or pinching [Ksenia XS]
A low rise cheeky brief in Black honeycomb micromesh [Ksenia XS]

Sieve Brief

4.5
Rated 4.5 out of 5 stars
388 Reviews

Ultra low rise. Honeycomb micromesh.


Sieve fan? Meet your matching bottom and feel all sorts of pulled together. Create a custom 2 Pack ->
BlackBuffNavyPeachSlateNEWBuff BoaCoralHazeWhite Boa

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

Fit

  • Size Chart
  • Use this as a guide. If you prefer a looser fit, we recommend sizing up

Fabric + Care

  • Size Chart
  • Belgian power micromesh is subtly sheer
  • 74% Polyamide (Nylon) 26% Elastane (Spandex)
  • 100% Cotton gusset lining
  • Wash on delicates/cold, tumble dry low

FAQ

  • Price-slashed, Annual Sale items with a red SALE tag are direct size exchange only (no refunds). Full-priced items purchased with the 20% off discount are eligible for refund, credit or exchange. Click here for more info on our Sale policies.
  • 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 Trim Bralette in Black Sieve Trim Bralette in Black (alternate view) Sieve Trim Bralette in Black $70
Sieve Balconette Bra in Black Sieve Balconette Bra in Black (alternate view) Sieve Balconette Bra in Black $78
Sieve Cutout Bra in Black Sieve Cutout Bra in Black (alternate view) Sieve Cutout Bra in Black $70 +
Sieve Non-Wire Bra in Black Sieve Non-Wire Bra in Black (alternate view) Sieve Non-Wire Bra in Black $70 +
4.5
Rated 4.5 out of 5 stars
Based on 388 reviews
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388 reviews
  • Linda P.
    Verified Buyer
    Size Purchased M
    How it Fits A Little Small
    Age 65+
    Jean Size 10
    22 hours ago
    Size Purchased M
    How it Fits A Little Small
    Age 65+
    Jean Size 10
    Sieve Brief in Black
    Reviewing
    Sieve Brief in Black
    Rated 5 out of 5 stars
    Am little small

    I had to order a size up. It is still comfortable.

    Was this helpful?
  • Mary K.
    Verified Buyer
    Size Purchased M
    How it Fits True to Size
    Age 45 - 54
    Yesterday
    Size Purchased M
    How it Fits True to Size
    Age 45 - 54
    Sieve Brief in Slate
    Reviewing
    Sieve Brief in Slate
    Rated 5 out of 5 stars
    Fits great

    I love how this fits me, doesn't bunch up and looks great too. The material is very nice.

    Was this helpful?
  • Megan B.
    Verified Buyer
    Size Purchased S
    How it Fits True to Size
    Age 35 - 44
    Jean Size 27
    Yesterday
    Size Purchased S
    How it Fits True to Size
    Age 35 - 44
    Jean Size 27
    Sieve Brief in Navy
    Reviewing
    Sieve Brief in Navy
    Rated 5 out of 5 stars
    Comfy!

    Love how comfy these are

    Was this helpful?
  • Tammy A.
    Verified Buyer
    5 days ago
    Sieve Brief in Buff Boa
    Reviewing
    Sieve Brief in Buff Boa
    Rated 4 out of 5 stars
    Pretty

    These panties are pretty as I love the color and pattern, they do however the waist is kinda low so it doesn’t give me the best full coverage that I was hoping for.

    Was this helpful?
  • Darrien P.
    Verified Buyer
    Size Purchased L
    How it Fits True to Size
    Age 45 - 54
    Jean Size 31
    5 days ago
    Size Purchased L
    How it Fits True to Size
    Age 45 - 54
    Jean Size 31
    Sieve Brief in Navy
    Reviewing
    Sieve Brief in Navy
    Rated 5 out of 5 stars
    So comfy

    Love that they had some mild compression and stayed in place!

    Was this helpful?
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Detail view of Sieve Brief in Black for sizer

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