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Power micromesh is surprisingly supportive [Aube 1]
Triangle cut is low coverage in the front and sides [Aube 1]
Adjustable hook and eye and strap sliders in the back[Aube 1]
Wide elastic bland is comfortable and supportive
Hannah is a 36DD in our size 4 [Hannah 4]
Black power micromesh is subtly sheer [Hannah 4]
The back of the bra can be adjusted tighter or looser [Hannah 4]
  • Thumbnail image #1 of Sieve Triangle Bra in Black [Aube 1]
  • Thumbnail image #2 of Sieve Triangle Bra in Black [Aube 1]
  • Thumbnail image #3 of Sieve Triangle Bra in Black [Aube 1]
  • Thumbnail image #4 of Sieve Triangle Bra in Black
  • Thumbnail image #5 of Sieve Triangle Bra in Black [Hannah 4]
  • Thumbnail image #6 of Sieve Triangle Bra in Black [Hannah 4]
  • Thumbnail image #7 of Sieve Triangle Bra in Black [Hannah 4]
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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
Based on 338 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 338 reviews
  • 5 Stars
    237 Reviews
  • 4 Stars
    46 Reviews
  • 3 Stars
    38 Reviews
  • 2 Stars
    13 Reviews
  • 1 Star
    4 Reviews
91% of reviewers would recommend this product to a friend
338 Reviews
Reviewed by BJA
Verified Buyer
Sieve Triangle Bra in Coral
Reviewing
Sieve Triangle Bra in Coral
I recommend this product
Rated 5 out of 5
Review posted

Beautiful bra, love the sheer & color

I tried negative bc I love the sheer look of their products, and that is true for this bra. It's comfy, sexy, and a great color.

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Reviewed by Clara M.
Verified Buyer
Sieve Triangle Bra in Buff
Reviewing
Sieve Triangle Bra in Buff
I recommend this product
Rated 4 out of 5
Review posted

Nice fabric and band- small cups

I'm a 38c and got a large. This style has a more narrow under arm. I like the deep V front, but the sides weren't enough for me. I'd recommend for smaller busted women.

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Reviewed by Emma K.
Verified Buyer
Sieve Triangle Bra in Buff
Reviewing
Sieve Triangle Bra in Buff
I don't recommend this product
Rated 2 out of 5
Review posted

Boobs-a-Poppin’

...and not in a good way. Yes this is a comfy, attractive bra but when I decided to wear it for the first time it was a day when I was gardening and no matter how I adjusted it I couldn’t keep my boobs from popping out. I’ll try it again if I plan to sit around all day; given that doesn’t happen often I’d have to say this bra was a waste of money.

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Non-Wire Bra Sizing

Non-Wire Bra Sizing Size Chart

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

@negativeunderwear