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Our signature power mesh in a deep v neckline bralette [Paula 1]
Slate is a steely grey blue tone [Paula 1]
Belgian micromesh is sheer and strong
Slate is a cool grey-blue [Aube 1]
Hook & eye closure in the back [Aube 1]
Shown here with our matching Sieve Thong in Slate [Aube 1]
  • Thumbnail image #1 of Sieve Triangle Bra in Slate [Paula 1]
  • Thumbnail image #2 of Sieve Triangle Bra in Slate [Paula 1]
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  • Thumbnail image #4 of Sieve Triangle Bra in Slate [Aube 1]
  • Thumbnail image #5 of Sieve Triangle Bra in Slate [Aube 1]
  • Thumbnail image #6 of Sieve Triangle Bra in Slate [Aube 1]
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Product photo #1 of Sieve Triangle Bra in Slate [Paula 1] Product photo #2 of Sieve Triangle Bra in Slate [Paula 1] Product photo #3 of Sieve Triangle Bra in Slate Product photo #4 of Sieve Triangle Bra in Slate [Aube 1] Product photo #5 of Sieve Triangle Bra in Slate [Aube 1] Product photo #6 of Sieve Triangle Bra in Slate [Aube 1]

Sieve Triangle Bra in Slate

Rated 4.5 out of 5
Based on 310 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
  • A caramel-y sunrise desert sands affogato tone
  • 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
average rating 4.5 out of 5
Based on 310 reviews
  • 5 Stars
    218 Reviews
  • 4 Stars
    43 Reviews
  • 3 Stars
    37 Reviews
  • 2 Stars
    8 Reviews
  • 1 Star
    4 Reviews
91% of reviewers would recommend this product to a friend
310 Reviews
Reviewed by Angelique W.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Coral triangle bra

Perfect fit and beautiful color! I am 34D and 2 is perfect!!! Looks great with the matching high waist brief!

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Reviewed by Melissa B.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

I’m a major bra snob

I probably return about 90% of my on-line clothing purchases, plus I wear the same two bras because I hate the other dozen or so that I own, but this is the softest, best-fitting bra (and underwear) ever. I’m going to order them in every color. I don’t think I’ve ever taken the time to write a review before where I’ve been satisfied until now. Thank you!

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Reviewed by Z
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Yup, this one

I made the mistake of trying to wear this one before washing it. It was kind of itchy--but now that it has been through the wash once, it's turned into the most comfortable, supportive, attractive bra I own. As with other bras from NU I have a bit of an issue with the edging on the cup giving me a boob crack, but the power mesh on this one is substantial enough and has enough body to keep that at a minimum. Feels like quality material and stitching, I'll definitely purchase more in other colors (please offer more colors, neutrals are nice but aren't everything!)

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