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Triangle cut is low coverage at the front and sides [Giselle 1]
Moon is a pale silvery grey tone [Giselle 1]
Sieve Triangle Bra in Moon
Adjustable hook & eye and strap sliders in the back [Giselle 1]
A triangle bra and low rise thong in our signature micromesh [Giselle 1]
flat
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Buy more, save money
Triangle cut is low coverage at the front and sides [Giselle 1]
Moon is a pale silvery grey tone [Giselle 1]
Sieve Triangle Bra in Moon
Adjustable hook & eye and strap sliders in the back [Giselle 1]
A triangle bra and low rise thong in our signature micromesh [Giselle 1]

Sieve Triangle Bra

4.5
Rated 4.5 out of 5 stars
2,065 Reviews

Surprising support. Deep v neckline.

Our signature Sieve mesh in a lower coverage triangle cut. Great shape - no pad or wire included. Create a custom 2 Pack ->
BlackBuffSlateBuff + WhitePeachWhiteNavyBuff + BlackCherryCoralCoral + WhiteHazeMoonNEWWhite Boa

Buy more, save $

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

Fit

  • Size Chart
  • Use this as a guide. Preference is a huge factor — if you’re near the top of a size range and/or prefer more coverage, you may want to size up.
  • Triangle cut has lower coverage in both the cups and the sides.

Fabric + Care

  • Size Chart
  • Made from a sheer Belgian power micromesh — nipples are visible
  • A soft silvery cloud lunar dust baby bunny ears tone
  • 74% Polyamide (Nylon) 26% Elastane (Spandex)
  • Wireless
  • Hand wash in cold water, 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 High-Waist Brief in Moon Sieve High-Waist Brief in Moon (alternate view) Sieve High-Waist Brief in Moon $45 +
Sale
Whipped Boy Short in Moon Whipped Boy Short in Moon (alternate view) Whipped Boy Short in Moon $45 $30
Sale
Whipped Boxer in Moon Whipped Boxer in Moon (alternate view) Whipped Boxer in Moon $50 $32
Sale
Whipped Slip Dress in Moon Whipped Slip Dress in Moon (alternate view) Whipped Slip Dress in Moon $85 $45
4.5
Rated 4.5 out of 5 stars
Based on 2,065 reviews
Write a Review (Opens in a new window)
2,065 reviews
  • Portia W.
    Verified Buyer
    Size Purchased 4
    How it Fits True to Size
    Age Range 45 - 54
    Bra Size 38C
    37 minutes ago
    Size Purchased 4
    How it Fits True to Size
    Age Range 45 - 54
    Bra Size 38C
    Sieve Triangle Bra in Navy
    Reviewing
    Sieve Triangle Bra in Navy
    Rated 5 out of 5 stars
    Supportive and pretty

    I’m so used to underwire, but I was pleasantly surprised by support from this bra!

    Was this helpful?
  • Mary R.
    Verified Buyer
    Size Purchased 1
    How it Fits True to Size
    Age Range 65+
    Bra Size 34A
    8 hours ago
    Size Purchased 1
    How it Fits True to Size
    Age Range 65+
    Bra Size 34A
    Sieve Triangle Bra in Navy
    Reviewing
    Sieve Triangle Bra in Navy
    Rated 5 out of 5 stars
    my new fav

    This is my first purchase of this bra and it will not be the last. I love the simplicity of it in addition to the comfort and fit.

    Was this helpful?
  • Stacey R.
    Verified Buyer
    Size Purchased 2
    How it Fits True to Size
    Age Range 55 - 64
    Bra Size 34C
    Yesterday
    Size Purchased 2
    How it Fits True to Size
    Age Range 55 - 64
    Bra Size 34C
    Sieve Triangle Bra in Navy
    Reviewing
    Sieve Triangle Bra in Navy
    Rated 5 out of 5 stars
    Very pleased

    Love the weightless feel. Very sexy.

    Was this helpful?
  • Tad S.
    Verified Buyer
    Size Purchased 2
    How it Fits True to Size
    Age Range 55 - 64
    Bra Size 32C
    Yesterday
    Size Purchased 2
    How it Fits True to Size
    Age Range 55 - 64
    Bra Size 32C
    Sieve Triangle Bra in Buff + White
    Reviewing
    Sieve Triangle Bra 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?
  • Darby Van H.
    Verified Buyer
    Size Purchased 2
    How it Fits True to Size
    Age Range 65+
    Bra Size 34C
    Yesterday
    Size Purchased 2
    How it Fits True to Size
    Age Range 65+
    Bra Size 34C
    Sieve Triangle Bra in Buff
    Reviewing
    Sieve Triangle Bra in Buff
    Rated 5 out of 5 stars
    nice

    good design

    Was this helpful?
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Detail view of Sieve Triangle Bra in Moon for sizer

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