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Sieve Triangle Bra in Black and in Buff and in Slate (3 Pack)
Sieve Triangle Bra in Black and in Buff and in Slate (3 Pack)
Sieve Triangle Bra in Black and in Buff and in Slate (3 Pack)
Sieve Triangle Bra in Black and in Buff and in Slate (3 Pack)
Sieve Triangle Bra in Black and in Buff and in Slate (3 Pack)
Sieve Triangle Bra in Black and in Buff and in Slate (3 Pack)
Sieve Triangle Bra in Black and in Buff and in Slate (3 Pack)
Sieve Triangle Bra in Black and in Buff and in Slate (3 Pack)
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Sieve Triangle Bra in Black and Buff and Slate (3 Pack)

Rated 4.5 out of 5
Based on 1321 reviews

Our signature mesh in a deep v cut x3


A plunge neckline triangle bralette in our best selling micromesh. A hybrid of support, comfy, sexy, cool — aka winning. 
Sieve Triangle Bra in Black
Sieve Triangle Bra in Buff
Sieve Triangle Bra in Slate

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
average rating 4.5 out of 5
Based on 1321 reviews
  • 5 Stars
    946 Reviews
  • 4 Stars
    169 Reviews
  • 3 Stars
    115 Reviews
  • 2 Stars
    54 Reviews
  • 1 Star
    37 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
1321 Reviews
Reviewed by Michelle C.
Verified Buyer
Review posted
I recommend this product
Rated 5 out of 5
Size Purchased
3
How it Fits
True to Size
Age Range
65+
Bra Size
34C

Cute and Comfortable!

This bra is what all bra manufacturers promise of their bras....it is so incredibly comfortable - it's the next best thing to going without a bra!! I'm so glad that I tried these bras - I'm now going to order more in different styles!!

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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?
Reviewed by Katie S.
Verified Buyer
Review posted
I recommend this product
Rated 4 out of 5
Size Purchased
2
How it Fits
True to Size
Age Range
25 - 34
Bra Size
34C

My go to

I have four of these bras now and I really do like them. They are comfortable and cute. My only issue is I sometimes have the dreaded cup slippage so my shirts have a front bulge. Even still, it is not as bad as some other bra brands with the same issue.

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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 4 out of 5
Was this helpful?
Reviewed by Desiree G.
Verified Buyer
Review posted
I recommend this product
Rated 4 out of 5
Size Purchased
3
How it Fits
Runs Small
Age Range
45 - 54
Bra Size
36C

Too Small

It seemed to be great quality. Color as expected. I followed sizing chart but it was too small. Band was somewhat snug on middle clip. Cups flattened. For reference, I'm normally a 36C and ordered a 3. Can't attest to wear since had to return. But I was impressed overall and will order a size up.

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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 4 out of 5
Was this helpful?