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[Brittney 3]
[Brittney 3]
Sieve Triangle Bra in Navy
[Ksenia 1]
[Ksenia 1]
[Ksenia 1]
[Brittney 3]
flat
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[Brittney 3] [Brittney 3] Sieve Triangle Bra in Navy [Ksenia 1] [Ksenia 1] [Ksenia 1] [Brittney 3]

Sieve Triangle Bra

4.5
Rated 4.5 out of 5 stars
1,756 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 ->
NEW

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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
  • 74% Polyamide (Nylon) 26% Elastane (Spandex)
  • Wireless
  • Hand wash in cold water, dry flat

FAQ

  • 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

Pair it with ->

Sieve Non-Wire Bra in Navy Sieve Non-Wire Bra in Navy (alternate view) Sieve Non-Wire Bra in Navy $65 +
Whipped Non-Wire Bra in Navy Whipped Non-Wire Bra in Navy (alternate view) Whipped Non-Wire Bra in Navy $68
Whipped Boy Short in Navy Whipped Boy Short in Navy (alternate view) Whipped Boy Short in Navy $45
Sieve Thong in Navy Sieve Thong in Navy (alternate view) Sieve Thong in Navy $32 +
4.5
Rated 4.5 out of 5 stars
Based on 1,756 reviews
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1,756 reviews
  • Allison S.
    Verified Buyer
    Size Purchased 3
    How it Fits True to Size
    Age Range 55 - 64
    Bra Size 34DD/E
    3 minutes ago
    Size Purchased 3
    How it Fits True to Size
    Age Range 55 - 64
    Bra Size 34DD/E
    Sieve Triangle Bra in Buff
    Reviewing
    Sieve Triangle Bra in Buff
    Rated 4 out of 5 stars
    The most Comfortable Bra

    Love this bra. I’m large chested and usually spill out with other bras. This bra fits like a glove and has a bit of stretch in the cup to fit comfortably.

    Was this helpful?
  • Rhonda B.
    Verified Buyer
    Size Purchased 4
    How it Fits A Little Small
    Age Range 65+
    Bra Size 34D
    17 hours ago
    Size Purchased 4
    How it Fits A Little Small
    Age Range 65+
    Bra Size 34D
    Sieve Triangle Bra in Slate
    Reviewing
    Sieve Triangle Bra in Slate
    Rated 5 out of 5 stars
    TRIANGLE

    It makes me feel pretty.

    Was this helpful?
  • Dominique S.
    Verified Buyer
    Size Purchased 1
    How it Fits True to Size
    Age Range 25 - 34
    Bra Size 32B
    21 hours ago
    Size Purchased 1
    How it Fits True to Size
    Age Range 25 - 34
    Bra Size 32B
    Sieve Triangle Bra in Peach
    Reviewing
    Sieve Triangle Bra in Peach
    Rated 5 out of 5 stars
    Amazing bra!

    Wanted one of these bras for a long while, finally decided to try. Never going back to a regular bra.

    Was this helpful?
  • Dominique S.
    Verified Buyer
    Size Purchased 1
    How it Fits True to Size
    Age Range 25 - 34
    Bra Size 32B
    21 hours ago
    Size Purchased 1
    How it Fits True to Size
    Age Range 25 - 34
    Bra Size 32B
    Sieve Triangle Bra in Black
    Reviewing
    Sieve Triangle Bra in Black
    Rated 5 out of 5 stars
    Amazing!

    Love the fit! The see through is amazing! (And a perfect secret for me.)

    Was this helpful?
  • nick p.
    Verified Buyer
    Size Purchased 2
    How it Fits True to Size
    Age Range 25 - 34
    Bra Size 32DD/E
    23 hours ago
    Size Purchased 2
    How it Fits True to Size
    Age Range 25 - 34
    Bra Size 32DD/E
    Sieve Triangle Bra in White
    Reviewing
    Sieve Triangle Bra in White
    Rated 5 out of 5 stars
    perfect gift

    wife loved it

    Was this helpful?
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Non-Wire Bra Sizing

Non-Wire Bra Sizing Size Chart

* Non-wire bra sizing can vary by preference and if you're toward the top of a size range and prefer more coverage, you may want to size up. For styles available in + sizes (designed with additional support details for our larger cup customers), we find DD's can be on the cusp - if you prefer more coverage and support, we suggest the + bra equivalent for your band size.

Btw, the size nomenclature has changed for Bra Tops. Here's the conversion:
XS=0, S=1, M=2, L=3, XL=4, XXL=5

Q’s about sizing or fit? Email us at hello@negativeunderwear.com

Detail view of Sieve Triangle Bra in Navy for sizer

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