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

Sieve Brief Custom 2-Pack in

Sieve Brief Custom 2-Pack

4.5
Rated 4.5 out of 5 stars
454 Reviews

Ultra low rise. Honeycomb micromesh.


Sieve fan? Meet your matching bottom and feel all sorts of pulled together.
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 Brief Custom 2-Pack
Sieve Brief Custom 2-Pack
Sieve Brief Custom 2-Pack
Sieve Brief Custom 2-Pack
Sieve Brief Custom 2-Pack
Sieve Brief Custom 2-Pack
Sieve Brief Custom 2-Pack
Sieve Brief Custom 2-Pack
Sieve Brief Custom 2-Pack
Sieve Brief Custom 2-Pack
Sieve Brief Custom 2-Pack
Sieve Brief 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, tumble dry low

FAQ

  • Price-slashed, Last Chance Sale items with a red SALE tag are direct size exchange only (no refunds).
  • All full-priced, unworn items, with tags attached and in their original packaging are eligible for return or exchange within 60 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
4.5
Rated 4.5 out of 5 stars
Based on 454 reviews
454 reviews
  • Li-Shan T.
    Verified Buyer
    Size Purchased S
    How it Fits True to Size
    Age 35 - 44
    Jean Size 29, 28
    20 hours ago
    Size Purchased S
    How it Fits True to Size
    Age 35 - 44
    Jean Size 29, 28
    Sieve Brief in Slate
    Reviewing
    Sieve Brief in Slate
    Rated 5 out of 5 stars
    Obsessed with this color

    I just love this color, I had to buy these a size too small (that’s not on the company) and hopefully I shed a few pounds or they restock the medium. I bought the matching bra and the set has really boosted my confidence.

  • Li-Shan T.
    Verified Buyer
    Size Purchased M
    How it Fits True to Size
    Age 35 - 44
    Jean Size 29, 28
    20 hours ago
    Size Purchased M
    How it Fits True to Size
    Age 35 - 44
    Jean Size 29, 28
    Sieve Brief in Black
    Reviewing
    Sieve Brief in Black
    Rated 5 out of 5 stars
    Chic and comfortable

    I want to get rid of some older cotton undies and I have slowly been swapping everything out for Calvin Klein but wanted to branch out. I’m so glad I did, these are extremely chic and will go with any bra (like my CKs) but I did buy a sieve bra as well!

  • Sandy M.
    Verified Buyer
    Size Purchased S
    How it Fits True to Size
    Age 35 - 44
    Jean Size 26, 2
    6 days ago
    Size Purchased S
    How it Fits True to Size
    Age 35 - 44
    Jean Size 26, 2
    Sieve Brief in Slate
    Reviewing
    Sieve Brief in Slate
    Rated 3 out of 5 stars
    Not bad, not great.

    Doesn't stay put and rides up my butt. Can't justify price. Better fitting briefs out there at a better price, for me at least.

  • Carrie M.
    Verified Buyer
    Size Purchased S
    How it Fits True to Size
    Age 55 - 64
    Jean Size 26
    1 week ago
    Size Purchased S
    How it Fits True to Size
    Age 55 - 64
    Jean Size 26
    Sieve Brief in Slate
    Reviewing
    Sieve Brief in Slate
    Rated 5 out of 5 stars
    Panty

    Nice

  • Mark M.
    Verified Buyer
    Size Purchased L
    How it Fits True to Size
    Age 35 - 44
    Jean Size 14
    2 weeks ago
    Size Purchased L
    How it Fits True to Size
    Age 35 - 44
    Jean Size 14
    Sieve Brief in Buff
    Reviewing
    Sieve Brief in Buff
    Rated 5 out of 5 stars
    Bought for my wife

    Sexy and practical

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