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[Aube 1]
[Aube 1]
[Aube 1]
Wide elastic bland is comfortable and supportive
[Hannah 4]
[Hannah 4]
[Hannah 4]
  • Thumbnail image #1 of Sieve Triangle Bra in Black [Aube 1]
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Product photo #1 of Sieve Triangle Bra in Black [Aube 1] Product photo #2 of Sieve Triangle Bra in Black [Aube 1] Product photo #3 of Sieve Triangle Bra in Black [Aube 1] Product photo #4 of Sieve Triangle Bra in Black Product photo #5 of Sieve Triangle Bra in Black [Hannah 4] Product photo #6 of Sieve Triangle Bra in Black [Hannah 4] Product photo #7 of Sieve Triangle Bra in Black [Hannah 4]

Sieve Triangle Bra

Rated 4.5 out of 5
232 Reviews

Surprising support. Deep v neckline.

Our signature Sieve mesh in a lower coverage triangle cut.
 

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Free shipping over $100. Easy Returns.

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

FAQ

  • All unworn items, with tags attached and in their original packaging are eligible for return or exchange within 21 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

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Write a Review
average rating 4.5 out of 5
Based on 232 reviews
  • 5 Stars
    161 Reviews
  • 4 Stars
    32 Reviews
  • 3 Stars
    31 Reviews
  • 2 Stars
    6 Reviews
  • 1 Star
    2 Reviews
91% of reviewers would recommend this product to a friend
232 Reviews
Reviewed by KP
Verified Buyer
Sieve Triangle Bra in Buff
Reviewing
Sieve Triangle Bra in Buff
I recommend this product
Rated 5 out of 5
Review posted

So comfortable!

Feels like you’re wearing nothing!

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Reviewed by Allie B.
Verified Buyer
Sieve Triangle Bra in Buff + Black
Reviewing
Sieve Triangle Bra in Buff + Black
I recommend this product
Rated 5 out of 5
Review posted

Effortlessly sexy, and I forget I'm wearing it

The best ever. The mesh fabric is stretchy and soft, and moves with you. I was hesitant to buy this bra because it's expensive, but in the end, it was worth the investment. My boobs and my husband are happy.

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Reviewed by Erica G.
Verified Buyer
Sieve Triangle Bra in Buff
Reviewing
Sieve Triangle Bra in Buff
I recommend this product
Rated 5 out of 5
Review posted

Love it!

i’m a 34 DD and a big fan of bralettes, i only wear real bras if absolutely necessary (so not often) this style is perfect for casual/everyday wear under pretty much any shirt. obviously it needs to be adjusted throughout the day as you lean over and whatnot but i don’t have any crazy side boob spillage like out of some other bralettes! and the straps stay put without digging into my shoulders

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Non-Wire Bra Sizing

Size Chart

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

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