Buy more, save money
Thumbnail image #1 of Sieve Thong Custom 2-Pack
Thumbnail image #2 of Sieve Thong Custom 2-Pack
Thumbnail image #3 of Sieve Thong Custom 2-Pack
Thumbnail image #4 of Sieve Thong Custom 2-Pack
Thumbnail image #5 of Sieve Thong Custom 2-Pack
Thumbnail image #6 of Sieve Thong Custom 2-Pack
Thumbnail image #7 of Sieve Thong Custom 2-Pack
Thumbnail image #8 of 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 in

Sieve Thong Custom 2-Pack

4.8
Rated 4.8 out of 5 stars
1,271 Reviews

Low rise. Semi sheer mesh.

A low rise thong in our airy light, subtly sheer, naturally smoothing Belgian micromesh.
XS S M L XL XXL
XS S M L XL XXL
XS S M L XL XXL
XS S M L XL XXL
XS S M L XL XXL
XS S M L XL XXL
XS S M L XL XXL
XS S M L XL XXL
XS S M L XL XXL
XS S M L XL XXL
XS S M L XL XXL
XS S M L XL XXL
XS S M L XL XXL
XS S M L XL XXL
XS S M L XL XXL
XS S M L XL XXL
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 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

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 items are either exchange only or final sale. Any item marked as "exchange only" are eligible for direct size exchange only (aka no refunds). Items marked as "final sale" are not eligible for returns or exchanges.
  • 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
View full details
4.8
Rated 4.8 out of 5 stars
Based on 1,271 reviews
1,271 reviews
  • Marit K.
    Verified Buyer
    Size Purchased M
    How it Fits True to Size
    Age 45 - 54
    Jean Size 6
    6 minutes ago
    Size Purchased M
    How it Fits True to Size
    Age 45 - 54
    Jean Size 6
    Sieve Thong in Coral
    Reviewing
    Sieve Thong in Coral
    Rated 5 out of 5 stars
    Sieve Thong Review

    Love it!

  • Ann C.
    Verified Buyer
    Size Purchased M
    How it Fits True to Size
    Age 45 - 54
    Jean Size 29
    2 hours ago
    Size Purchased M
    How it Fits True to Size
    Age 45 - 54
    Jean Size 29
    Sieve Thong in Buff + White
    Reviewing
    Sieve Thong in Buff + White
    Rated 5 out of 5 stars
    Perfection

    Love how light weight this thing is- like you aren’t wearing anything. Love also that the sides don’t dig into my body - no dents!

  • Ashlee F.
    Verified Buyer
    Size Purchased XS
    How it Fits True to Size
    Age 35 - 44
    Jean Size 25
    9 hours ago
    Size Purchased XS
    How it Fits True to Size
    Age 35 - 44
    Jean Size 25
    Sieve Thong in Cherry
    Reviewing
    Sieve Thong in Cherry
    Rated 5 out of 5 stars
    😍

    Fit perfectly!

  • Candace G.
    Verified Buyer
    Size Purchased M
    How it Fits True to Size
    Age 35 - 44
    Jean Size 27
    Yesterday
    Size Purchased M
    How it Fits True to Size
    Age 35 - 44
    Jean Size 27
    Sieve Thong in White
    Reviewing
    Sieve Thong in White
    Rated 5 out of 5 stars
    Comfy

    I’m ready to replace all my underwear with negative.

  • Candace G.
    Verified Buyer
    Yesterday
    Sieve Thong in Orchid
    Reviewing
    Sieve Thong in Orchid
    Rated 5 out of 5 stars
    Comfy

    I’m ready to replace all my underwear with negative.

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