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Power micromesh is surprisingly supportive [Aube 1]
Triangle cut is low coverage in the front and sides [Aube 1]
Sieve Triangle Bra in Black
Adjustable hook and eye and strap sliders in the back [Aube 1]
Hannah is a 36DD in our size 4 [Hannah 4]
The back of the bra can be adjusted tighter or looser [Hannah 4]
Wide elastic bland is comfortable and supportive
flat
  • of Sieve Triangle Bra in Black [Aube 1]
  • of Sieve Triangle Bra in Black [Aube 1]
  • of Sieve Triangle Bra in Black
  • of Sieve Triangle Bra in Black [Aube 1]
  • of Sieve Triangle Bra in Black [Hannah 4]
  • of Sieve Triangle Bra in Black [Hannah 4]
  • of Sieve Triangle Bra in Black
Buy more, save money
Power micromesh is surprisingly supportive [Aube 1] Triangle cut is low coverage in the front and sides [Aube 1] Sieve Triangle Bra in Black Adjustable hook and eye and strap sliders in the back [Aube 1] Hannah is a 36DD in our size 4 [Hannah 4] The back of the bra can be adjusted tighter or looser [Hannah 4] Wide elastic bland is comfortable and supportive

Sieve Triangle Bra

Rated 4.5 out of 5
Based on 1521 reviews

Surprising support. Deep v neckline.


Our signature Sieve mesh in a lower coverage triangle cut. Great shape - no pad or wire included. 
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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 String Thong in Black Sieve String Thong in Black (alternate view) Sieve String Thong in Black $30 +
Cotton French Cut Brief in Black (Pack) Cotton French Cut Brief in Black (Pack) (alternate view) Cotton French Cut Brief in Black (Pack) $58 +
Whipped Boy Short in Black Whipped Boy Short in Black (alternate view) Whipped Boy Short in Black $45 +
Sieve High-Waist Brief in Black Sieve High-Waist Brief in Black (alternate view) Sieve High-Waist Brief in Black $45 +
Write a Review
average rating 4.5 out of 5
Based on 1521 reviews
  • 5 Stars
    1100 Reviews
  • 4 Stars
    190 Reviews
  • 3 Stars
    129 Reviews
  • 2 Stars
    60 Reviews
  • 1 Star
    42 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
1521 Reviews
Reviewed by Geoffrey B.
Verified Buyer
Review posted
Sieve Triangle Bra in White Boa
Reviewing
Sieve Triangle Bra in White Boa
I recommend this product
Rated 5 out of 5
Size Purchased
2
How it Fits
True to Size
Age Range
45 - 54
Bra Size
34B

Wifey review

Loved it on her

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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 5 out of 5
Was this helpful?
Reviewed by Sue G.
Verified Buyer
Review posted
Sieve Triangle Bra in Black
Reviewing
Sieve Triangle Bra in Black
I recommend this product
Rated 4 out of 5
Size Purchased
3
How it Fits
A Little Small
Age Range
45 - 54
Bra Size
36D

Husband loves it!

This is a very sexy bra without being uncomfortable! I did order the size suggested but had to size up because the cups were too small.

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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 4 out of 5
Comfort
Rated 3 out of 5
Was this helpful?
Reviewed by Meaghan D.
Verified Buyer
Review posted
Sieve Triangle Bra in Navy
Reviewing
Sieve Triangle Bra in Navy
I recommend this product
Rated 5 out of 5
Size Purchased
4
How it Fits
True to Size
Age Range
35 - 44
Bra Size
36DD/E

Works under anything

Comfy and supportive and yet incredibly sexy: can’t get enough of these

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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

Detail view of Sieve Triangle Bra in Black for sizer

@negativeunderwear