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MK, shown here, is a size 34D bra, wearing a size 3 [MK 34D]
4-row hook & eye closure allows for a more custom fit [MK 34D]
Sieve Non-Wire Bra in Slate
Pairs perfectly with our Sieve High-Waist Brief in Slate [MK 34D]
[MK 34D]
Sieve Non-Wire Bra in Slate
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Sieve Non-Wire Bra

Rated 4.6 out of 5
1637 Reviews

Our best selling bra for a reason.


Great shape and surprising support - no pad or wire included.

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 :)
  • *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
  • Steely blue-grey 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

Pair it with ->

Sieve Thong in Slate Sieve Thong in Slate
Sieve Thong in Slate $30 +
Rated 4.7 out of 5
127 Reviews
Silky Thong in Slate Silky Thong in Slate
Silky Thong in Slate $30 +
Rated 4.7 out of 5
91 Reviews
Silky Brief in Slate Silky Brief in Slate
Silky Brief in Slate $35 +
Rated 4.7 out of 5
112 Reviews
Sieve Brief in Slate Sieve Brief in Slate
Sieve Brief in Slate $35 +
Rated 4.5 out of 5
24 Reviews
Write a Review
average rating 4.6 out of 5
Based on 1637 reviews
  • 5 Stars
    1255 Reviews
  • 4 Stars
    180 Reviews
  • 3 Stars
    104 Reviews
  • 2 Stars
    58 Reviews
  • 1 Star
    40 Reviews
90% 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
1637 Reviews
Reviewed by Mckenzie
Verified Buyer
Sieve Non-Wire Bra in Peach
Reviewing
Sieve Non-Wire Bra in Peach
I don't recommend this product
Size Purchased
2
How it Fits
True to Size
Age
18 - 24
Bra Size
34B
Rated 2 out of 5
Review posted

Huge let down

I really wanted to love this bra. I ordered a 1 but the back was too tight so I ordered a 2 and the cup was too big. I decided to keep it anyway and the fabric has totally worn out over the course of a few months. Bad quality/ bad fit

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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 2 out of 5
Comfort
Rated 3 out of 5
Was this helpful?
Reviewed by Amy S.
Verified Buyer
Sieve Non-Wire Bra in Black
Reviewing
Sieve Non-Wire Bra in Black
I recommend this product
Size Purchased
3
How it Fits
True to Size
Age
65+
Bra Size
36C
Rated 5 out of 5
Review posted

Love it!

It's comfortable, supportive, and really looks great!

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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 Erika V.
Verified Buyer
Sieve Non-Wire Bra in Buff
Reviewing
Sieve Non-Wire Bra in Buff
I recommend this product
Size Purchased
4
How it Fits
True to Size
Age
35 - 44
Bra Size
38DDD/F
Rated 5 out of 5
Review posted

Fully In Love

On a mission to find a bra that didn’t make me want to scream in frustration, I decided to try this bra from Negative. It’s wildly comfortable, it doesn’t fold or dig, it’s surprisingly supportive for a wire free bra (as a 38 DDD, I don’t end up with the dreaded, droopy, uniboob.) AND ... it looks pretty sexy! My only complaint, is the limited color range in the 4+ size. I am a fan for life!

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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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Non-Wire Bra Sizing

Size Chart

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

@negativeunderwear