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Sieve Thong Custom 2-Pack
Sieve Thong Custom 2-Pack
Sieve Thong Custom 2-Pack
Sieve Thong Custom 2-Pack
Sieve Thong Custom 2-Pack
Sieve Thong Custom 2-Pack
Sieve Thong Custom 2-Pack
Sieve Thong Custom 2-Pack
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Buy more, save money
Sieve Thong Custom 2-Pack
Sieve Thong Custom 2-Pack
Sieve Thong Custom 2-Pack
Sieve Thong Custom 2-Pack
Sieve Thong Custom 2-Pack
Sieve Thong Custom 2-Pack
Sieve Thong Custom 2-Pack
Sieve Thong Custom 2-Pack

Sieve Thong Custom 2-Pack in

4.8
Rated 4.8 out of 5 stars
1,005 Reviews

Low rise. Semi sheer mesh.

A low rise thong in our airy light, subtly sheer, naturally smoothing Belgian micromesh.
Sieve Thong Custom 2-Pack
Sieve Thong Custom 2-Pack
Sieve Thong Custom 2-Pack
Sieve Thong Custom 2-Pack
Sieve Thong Custom 2-Pack
Sieve Thong Custom 2-Pack
Sieve Thong Custom 2-Pack
Sieve Thong Custom 2-Pack
Sieve Thong Custom 2-Pack
Sieve Thong Custom 2-Pack
Sieve Thong Custom 2-Pack
Sieve Thong Custom 2-Pack
Sieve Thong Custom 2-Pack
Sieve Thong Custom 2-Pack
Sieve Thong Custom 2-Pack
Sieve Thong Custom 2-Pack
Sieve Thong in Black
Sieve Thong in Buff
Sieve Thong in Buff + Black
Sieve Thong in Buff + White
Sieve Thong in Cherry
Sieve Thong in Coral
Sieve Thong in Coral + White
Sieve Thong in Glacier
Sieve Thong in Graphite
Sieve Thong in Haze
Sieve Thong in Moon
Sieve Thong in Navy
Sieve Thong in Peach
Sieve Thong in Slate
Sieve Thong in White
Sieve Thong in White Boa

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
  • A caramel-y sunrise desert sands affogato tone
  • 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
4.8
Rated 4.8 out of 5 stars
Based on 1,005 reviews
1,005 reviews
  • Lauren M.
    Verified Buyer
    Size Purchased M
    How it Fits True to Size
    Age 18 - 24
    Jean Size 28
    3 hours ago
    Size Purchased M
    How it Fits True to Size
    Age 18 - 24
    Jean Size 28
    Sieve Thong in Buff + White
    Reviewing
    Sieve Thong in Buff + White
    Rated 5 out of 5 stars
    Sexy and confident

    I ordered the matching bra and I am beyond impressed. I feel so awesome wearing it. I’ve not washed it yet so I don’t know how it will hold up but first impressions are 10/10

  • Heather N.
    Verified Buyer
    Size Purchased S
    How it Fits True to Size
    Age 45 - 54
    Jean Size 25
    4 hours ago
    Size Purchased S
    How it Fits True to Size
    Age 45 - 54
    Jean Size 25
    Sieve Thong in Buff
    Reviewing
    Sieve Thong in Buff
    Rated 5 out of 5 stars
    WORTH THE PRICE!

    I struggled with paying this much for a pair of undies, but they are worth it! So comfy and cute, and they make me feel a little sexy. ;) If you buy one you'll buy more. I did!

  • Elizabeth H.
    Verified Buyer
    Size Purchased L
    How it Fits A Little Small
    Age 55 - 64
    Jean Size 29
    5 hours ago
    Size Purchased L
    How it Fits A Little Small
    Age 55 - 64
    Jean Size 29
    Sieve Thong in Black
    Reviewing
    Sieve Thong in Black
    Rated 5 out of 5 stars
    Very Sexy

    Very comfortable and modern. I was surprised how comfortable it is and is very well made. I will certainly order more in the future.

  • Gayle M.
    Verified Buyer
    23 hours ago
    Sieve Thong in Graphite
    Reviewing
    Sieve Thong in Graphite
    Rated 5 out of 5 stars
    Surprisingly comfortable!

    Fit is great - the band doesn't dig in at all. Feels light and comfortable!

  • Nicole D.
    Verified Buyer
    Size Purchased M
    How it Fits True to Size
    Age 35 - 44
    Jean Size 10
    23 hours ago
    Size Purchased M
    How it Fits True to Size
    Age 35 - 44
    Jean Size 10
    Sieve Thong in Navy
    Reviewing
    Sieve Thong in Navy
    Rated 5 out of 5 stars
    Comfy and sexy

    Love the deep navy color and satin feel of the straps.

Reviews LoadedReviews Added
Detail view of Sieve Thong Custom 2-Pack for sizer