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Power micromesh is universally flattering [Paula XS]
A low rise thong with a plush waistband [Paula XS]
Made of a power micromesh we import from Belgium [Paula XS]
Honeycomb micromesh is strong but soft
Sieve Thong in Black 3 Pack
flat
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Buy more, save money
Power micromesh is universally flattering [Paula XS]
A low rise thong with a plush waistband [Paula XS]
Made of a power micromesh we import from Belgium [Paula XS]
Honeycomb micromesh is strong but soft
Sieve Thong in Black 3 Pack

Sieve Thong

4.8
Rated 4.8 out of 5 stars
994 Reviews

Low rise cut. Semi sheer mesh.


A low rise thong in our airy light, subtly sheer, naturally smoothing Belgian micromesh. Create a custom 2 Pack ->
BlackBuffBuff + WhiteGraphiteNavyPeachSlateWhiteBuff + BlackCherryCoralCoral + WhiteNEWGlacierHazeWhite Boa

Buy more, save $

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, dry flat

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 +
4.8
Rated 4.8 out of 5 stars
Based on 994 reviews
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994 reviews
  • Tad S.
    Verified Buyer
    Size Purchased M
    How it Fits True to Size
    Age 55 - 64
    18 minutes ago
    Size Purchased M
    How it Fits True to Size
    Age 55 - 64
    Sieve Thong in Buff + White
    Reviewing
    Sieve Thong in Buff + White
    Rated 5 out of 5 stars
    Perfect gift

    Bought them as a surprise for my wife. SHE LOVES THEM!

    Was this helpful?
  • Kim T.
    Verified Buyer
    Size Purchased S
    How it Fits True to Size
    Age 35 - 44
    Jean Size 26
    1 hour ago
    Size Purchased S
    How it Fits True to Size
    Age 35 - 44
    Jean Size 26
    Sieve Thong in Coral
    Reviewing
    Sieve Thong in Coral
    Rated 5 out of 5 stars
    New obsession

    These are my new fav. Love the fit, color and style. Definitely getting more

    Was this helpful?
  • Shanae D.
    Verified Buyer
    Size Purchased S
    How it Fits A Little Big
    Age 25 - 34
    Jean Size 27
    22 hours ago
    Size Purchased S
    How it Fits A Little Big
    Age 25 - 34
    Jean Size 27
    Sieve Thong in Black
    Reviewing
    Sieve Thong in Black
    Rated 5 out of 5 stars
    My favorite pair of underwear

    I’ve replaced all my underwear with Negative. On some items, sizing can be tricky. Some products I’m better suited for an XS and others a S. Nonetheless, great quality and very comfortable.

    Was this helpful?
  • Toby C.
    Verified Buyer
    Size Purchased XS
    How it Fits True to Size
    Age 35 - 44
    Jean Size 2
    23 hours ago
    Size Purchased XS
    How it Fits True to Size
    Age 35 - 44
    Jean Size 2
    Sieve Thong in Buff + Black
    Reviewing
    Sieve Thong in Buff + Black
    Rated 5 out of 5 stars
    Cool and comfortable

    The item looks great and feels even better than I imagined. I am going add more to my collection.

    Was this helpful?
  • Bev A.
    Verified Buyer
    Size Purchased M
    How it Fits True to Size
    Age 55 - 64
    Jean Size 27
    Yesterday
    Size Purchased M
    How it Fits True to Size
    Age 55 - 64
    Jean Size 27
    Sieve Thong in Buff
    Reviewing
    Sieve Thong in Buff
    Rated 5 out of 5 stars
    Comfortable thong

    Bought it in the black and buff and this one

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

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