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[MK 32C]
Honeycomb mesh creates a flattering shape and support [MK 32C]
Hook & eye closure with adjustable straps for sizing variation [MK 32C]
[MK 32C]
  • [MK 32C]
  • Honeycomb mesh creates a flattering shape and support [MK 32C]
  • Hook & eye closure with adjustable straps for sizing variation [MK 32C]
  • [MK 32C]
Sieve Non-Wire Bra in Black Sieve Non-Wire Bra in Black Sieve Non-Wire Bra in Black Sieve Non-Wire Bra in Black

Sieve Non-Wire Bra

Rated 4.7 out of 5
543 Reviews
Our best selling bra for a reason. 
Great shape and surprising support - no pad or wire included.

Free shipping over $75. Easy Returns.

Fit

  • Size Chart
  • Size Breakdown...
    0 fits bra sizes: 30A, 30B, 30C, 32A
    1 fits bra sizes: 30D, 32B, 32C, 34A, 34B
    2 fits bra sizes: 30DD, 32D, 32DD, 34C, 34D, 36A
    3 fits bra sizes: 34DD, 36B, 36C, 36D, 38B
    4 fits bra sizes: 36DD, 38C, 38D, 38DD
    5 fits bra sizes: 40B, 40C, 40D
  • 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 :)
  • *Note, our Sieve Non-Wire doesn't have the same wide band as our Silky. As a result, it'll likely feel snug the first few wears. Don't fret — it'll stretch a bit with time.

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.
  • 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

Non-Wire Bra Sizing

Size Chart

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

“In a world of push-ups and pink, Negative goes back to basics with a focus on essentials - no itchy lace, no pesky bows."

“This bra is both comfortable and sexy - it's nice to see attention paid to a soft, supportive underband (the root of a bra, after all).” 

"I LOVE MY BRA. Seriously it’s amazing. I rave about the brand to all my girlfriends. Cant wait to buy more + get rid of the other crap.” 
Catie, 32D + Small

Pair it with ->

Only a few left!
High thigh cut = instant elongation (it's science) [Paula XS-M] Thin thong back with a bit of coverage around the hip [Paula XS-M]
Cotton Thong in Black $15 +
Rated 4.8 out of 5
19 Reviews
Paula, shown here, is wearing a 32C [Paula 32C] Paula, shown here, is wearing a 32C [Paula 32C]
Sieve Demi Bra in Black $70
Rated 4.8 out of 5
128 Reviews
Barely there leg elastic is seamless under jeans [MK S] Silky thin nylon fabric is subtly sheer - in a good way [MK S]
Silky Brief in Black $35 +
Rated 4.6 out of 5
32 Reviews
Pliable elastic waist band won't dig or roll [Nicola XS] Minimal cut is invisible under clothes [Nicola XS]
Silky Thong in Black $30 +
Rated 4.9 out of 5
32 Reviews
Write a Review
average rating 4.7 out of 5
Based on 543 reviews
  • 5 Stars
    446 Reviews
  • 4 Stars
    64 Reviews
  • 3 Stars
    27 Reviews
  • 2 Stars
    6 Reviews
  • 1 Star
    0 Reviews
96% of reviewers would recommend this product to a friend
Overall
Rated -1 on a scale of minus 2 to 2, where minus 2 is Loved it, 0 is Meh and 2 is Hated it
Quality
Rated 4 out of 5
Comfort
Rated 4 out of 5
543 Reviews
Reviewed by Rachel C.
Verified Buyer
Sieve Non-Wire Bra in Slate
Reviewing
Sieve Non-Wire Bra in Slate
I recommend this product
Size Purchased
1
How it Fits
True to Size
Age
45 - 54
Bra Size
34A
Rated 5 out of 5
Review posted

I want one in every color

The is the best bra I have ever owned. I first bought it in black and just got the slate...I might need it in every color.

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Overall
Rated -2 on a scale of minus 2 to 2, where minus 2 is Loved it, 0 is Meh and 2 is Hated it
Quality
Rated 5 out of 5
Comfort
Rated 5 out of 5
Was this helpful?
Reviewed by Jessie W.
Verified Buyer
Sieve Non-Wire Bra in Buff + Black
Reviewing
Sieve Non-Wire Bra in Buff + Black
I recommend this product
Size Purchased
36B
How it Fits
True to Size
Age
45 - 54
Bra Size
36B
Rated 5 out of 5
Review posted

Love this bra!

Beautiful bra that is incredibly comfortable!

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Overall
Rated -2 on a scale of minus 2 to 2, where minus 2 is Loved it, 0 is Meh and 2 is Hated it
Quality
Rated 5 out of 5
Comfort
Rated 5 out of 5
Was this helpful?
Reviewed by Priscilla D.
Verified Buyer
Sieve Non-Wire Bra in Slate
Reviewing
Sieve Non-Wire Bra in Slate
I recommend this product
Size Purchased
4
How it Fits
True to Size
Age
35 - 44
Bra Size
38C
Rated 5 out of 5
Review posted

So comfy!

Love, love, love the color and comfort!! So pretty!!

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Overall
Rated -2 on a scale of minus 2 to 2, where minus 2 is Loved it, 0 is Meh and 2 is Hated it
Quality
Rated 5 out of 5
Comfort
Rated 5 out of 5
Was this helpful?
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