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Buff is a caramal-y desert sands tone [Paula 1]
Adjustable hook and eye and strap sliders in the back [Paula 1]
Hannah is a size 36DD wearing our 4 [Hannah 4]
Hannah wears our matching Sieve Thong in Buff [Hannah 4]
[Aube 1]
Buff micro mesh is strong and supportive
  • Thumbnail image #1 of Sieve Triangle Bra in Buff [Paula 1]
  • Thumbnail image #2 of Sieve Triangle Bra in Buff [Paula 1]
  • Thumbnail image #3 of Sieve Triangle Bra in Buff [Hannah 4]
  • Thumbnail image #4 of Sieve Triangle Bra in Buff [Hannah 4]
  • Thumbnail image #5 of Sieve Triangle Bra in Buff [Aube 1]
  • Thumbnail image #6 of Sieve Triangle Bra in Buff
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Product photo #1 of Sieve Triangle Bra in Buff [Paula 1] Product photo #2 of Sieve Triangle Bra in Buff [Paula 1] Product photo #3 of Sieve Triangle Bra in Buff [Hannah 4] Product photo #4 of Sieve Triangle Bra in Buff [Hannah 4] Product photo #5 of Sieve Triangle Bra in Buff [Aube 1] Product photo #6 of Sieve Triangle Bra in Buff

Sieve Triangle Bra

Rated 4.4 out of 5
Based on 661 reviews

Surprising support. Deep v neckline.


Our signature Sieve mesh in a lower coverage triangle cut.
 
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Fit

  • Size Chart
  • Use this as a guide. Preference is a huge factor — the benefit of a non-wire is they're super flexible, so you will likely fit in more than one size. Like a looser band? Size up! Like less coverage? Size down! Still unsure? Try two sizes :)
  • Adjustable straps and hook & eye closure in the back
  • *Note, our Sieve Triangle Bra is an intentionally lower coverage in both the cups and the sides. Wide plush elastic band is extremely adaptable.

Fabric + Care

  • Size Chart
  • Made from a sheer Belgian power micromesh — nipples are visible
  • A caramel-y sunrise desert sands affogato tone
  • 74% Polyamide (Nylon) 26% Elastane (Spandex)
  • Hand wash in cold water, dry flat

FAQ

  • Price slashed, Annual Sale items with a red SALE tag are final sale. Full priced items and packs purchased with the 15% off discount are eligible for refund, credit or exchange. 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

Pair it with ->

Whipped Boy Short in Buff Whipped Boy Short in Buff Whipped Boy Short in Buff $45 +
Silky Thong in Buff Silky Thong in Buff Silky Thong in Buff $30 +
Sieve Brief in Buff Sieve Brief in Buff Sieve Brief in Buff $35 +
Essaouira Thong in Buff Essaouira Thong in Buff Essaouira Thong in Buff $30
Write a Review
average rating 4.4 out of 5
Based on 661 reviews
  • 5 Stars
    464 Reviews
  • 4 Stars
    79 Reviews
  • 3 Stars
    65 Reviews
  • 2 Stars
    37 Reviews
  • 1 Star
    16 Reviews
88% of reviewers would recommend this product to a friend
Overall
Rated 0 on a scale of minus 2 to 2, where minus 2 is Hated it, 0 is Meh and 2 is Loved it
Quality
Rated 4 out of 5
Comfort
Rated 4 out of 5
661 Reviews
Reviewed by Barbara B.
Verified Buyer
Review posted
Sieve Triangle Bra in Haze
Reviewing
Sieve Triangle Bra in Haze
I recommend this product
Rated 5 out of 5
Size Purchased
4
How it Fits
A Little Small
Age Range
65+
Bra Size
38B

Sieve triangle bra

Great fit after going up a size. Easy returns and good company.

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Overall
Rated 1 on a scale of minus 2 to 2, where minus 2 is Hated it, 0 is Meh and 2 is Loved it
Quality
Rated 5 out of 5
Comfort
Rated 4 out of 5
Was this helpful?
Reviewed by Miria
Verified Buyer
Review posted
Sieve Triangle Bra in Peach
Reviewing
Sieve Triangle Bra in Peach
I recommend this product
Rated 5 out of 5
Size Purchased
5
How it Fits
True to Size
Age Range
55 - 64
Bra Size
36DD/E

Nice

Wireless - sufficient support and not scratchy. Depending upon the « quiz » I was between two sizes so I went up because I’m sick and tired of wearing bras. I have the non-wire bra and the triangle bra in sieve and silky and am please with both. As a note on the band - the triangle band is a bit wide and rolls up but isn’t uncomfortable (i call it my sweat absorber) & the non-bra band remains in place.

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Overall
Rated 2 on a scale of minus 2 to 2, where minus 2 is Hated it, 0 is Meh and 2 is Loved it
Quality
Rated 4 out of 5
Comfort
Rated 4 out of 5
Was this helpful?
Reviewed by D P.
Verified Buyer
Review posted
Sieve Triangle Bra in Black
Reviewing
Sieve Triangle Bra in Black
I recommend this product
Rated 5 out of 5
Size Purchased
2
How it Fits
True to Size
Age Range
55 - 64
Bra Size
34C

Black Sieve Triangle Bra

I love the triangle sieve bras! This is my third purchase - all sieves!! Very comfy, great silhouette, love the wide band.

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Overall
Rated 2 on a scale of minus 2 to 2, where minus 2 is Hated it, 0 is Meh and 2 is Loved it
Quality
Rated 5 out of 5
Comfort
Rated 5 out of 5
Was this helpful?

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

@negativeunderwear