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Honeycomb micromesh is surprisingly supportive [Paula 32C]
Shown here with our Sieve Thong in Slate [Paula 32C]
Our signature micromesh is sexy yet comfortable
Solid support, no pad needed. [Hannah 36DD]
Plush elastic band sits flat and won't stretch out or roll [Hannah 36DD]
Shown here with our Sieve Thong in Slate [Hannah 36DD]
  • Thumbnail image #1 of Sieve Demi Bra in Slate [Paula 32C]
  • Thumbnail image #2 of Sieve Demi Bra in Slate [Paula 32C]
  • Thumbnail image #3 of Sieve Demi Bra in Slate
  • Thumbnail image #4 of Sieve Demi Bra in Slate [Hannah 36DD]
  • Thumbnail image #5 of Sieve Demi Bra in Slate [Hannah 36DD]
  • Thumbnail image #6 of Sieve Demi Bra in Slate [Hannah 36DD]
Product photo #1 of Sieve Demi Bra in Slate [Paula 32C] Product photo #2 of Sieve Demi Bra in Slate [Paula 32C] Product photo #3 of Sieve Demi Bra in Slate Product photo #4 of Sieve Demi Bra in Slate [Hannah 36DD] Product photo #5 of Sieve Demi Bra in Slate [Hannah 36DD] Product photo #6 of Sieve Demi Bra in Slate [Hannah 36DD]

Sieve Demi Bra

Rated 4.7 out of 5
Based on 409 reviews

None of the padding. All the support.


Airy light and surprisingly strong — it's not impossible, we made it.

We’d love to know what size you want us to make next - email us so we can add your info to our list!

Free shipping over $100. Easy Returns.

Fit

  • Made from a sheer Belgian power micromesh — nipples are visible
  • Velvety plush elastic underband
  • Heat transferred care label = no itchy tags

Fabric + Care

  • 74% Polyamide (Nylon) 26% Elastane (Spandex)
  • Steely blue-grey tone
  • 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

Pair it with ->

Sieve Thong in Slate Sieve Thong in Slate Sieve Thong in Slate $30 +
Rated 4.7 out of 5
Based on 166 reviews
Silky Thong in Slate Silky Thong in Slate Silky Thong in Slate $30 +
Rated 4.7 out of 5
Based on 98 reviews
Silky Brief in Slate Silky Brief in Slate Silky Brief in Slate $35 +
Rated 4.7 out of 5
Based on 122 reviews
Sieve Brief in Slate Sieve Brief in Slate Sieve Brief in Slate $35 +
Rated 4.7 out of 5
Based on 42 reviews
Write a Review
average rating 4.7 out of 5
Based on 409 reviews
  • 5 Stars
    334 Reviews
  • 4 Stars
    47 Reviews
  • 3 Stars
    12 Reviews
  • 2 Stars
    6 Reviews
  • 1 Star
    10 Reviews
94% of reviewers would recommend this product to a friend
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
409 Reviews
Reviewed by JR
Verified Buyer
Sieve Demi Bra in Black
Reviewing
Sieve Demi Bra in Black
I don't recommend this product
Size Purchased
34D
How it Fits
Runs Small
Age Range
25 - 34
Rated 2 out of 5
Review posted

Disappointing for how amazing negative bras are

I hoped to like this so much especially since I normally wear the sieve wireless style. I wanted the sexiness of an underwire and as a 34d who always keeps up with my current size, the negative sizing was completely wonky. The band was on the tighter side which was odd because I wear the negative size 2 with no issues. The strap to cup ratio was disproportionate so I had the not cute, underarm bulge and it just looked off. I wondered if it would expand with wear but too many things were a no, so I ended up returning:(.

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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 1 out of 5
Was this helpful?
Reviewed by Gabi
Verified Buyer
Sieve Demi Bra in Slate
Reviewing
Sieve Demi Bra in Slate
I recommend this product
Size Purchased
32D
How it Fits
True to Size
Age Range
35 - 44
Rated 5 out of 5
Review posted

Perfect

This is the best bra so far for me!

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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 Morgana D.
Verified Buyer
Sieve Demi Bra in Slate
Reviewing
Sieve Demi Bra in Slate
I recommend this product
Size Purchased
34D
How it Fits
True to Size
Age Range
45 - 54
Rated 5 out of 5
Review posted

Love This Bra (DD-D gal) Smoky Blue

Sometimes it is worth it to spend a little more to get the right fit. I am calling this my "Smoky Blue Sexy" bra as it makes me feel extra special. Most bras I need to buy a DD and deal with a touch more cup gap. This one I bough a D (as DD was out of stock) and surprised it fit perfect. Interesting how light it is (and sheer). Instantly it became my everyday bra. Keeping an eye out for new colors as I would love a wine colored one (hint hint).

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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?

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