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

Sieve Non-Wire Bra in Slate

Rated 4.7 out of 5
775 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
  • 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.
  • 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 4.7 out of 5
Based on 775 reviews
  • 5 Stars
    620 Reviews
  • 4 Stars
    93 Reviews
  • 3 Stars
    44 Reviews
  • 2 Stars
    15 Reviews
  • 1 Star
    3 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 Loved it, 0 is Meh and 2 is Hated it
Quality
Rated 4 out of 5
Comfort
Rated 4 out of 5
775 Reviews
Reviewed by Kasey L.
Verified Buyer
I recommend this product
Size Purchased
4
How it Fits
True to Size
Age
35 - 44
Bra Size
36DD/E
Rated 5 out of 5
Review posted

Best bra ever!!!!

I love my 2 bras they are so comfortable

If your thinking about it , just buy it you won’t be sorry

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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 Shae S.
Verified Buyer
I recommend this product
Size Purchased
4
How it Fits
True to Size
Age
18 - 24
Bra Size
36DD/E
Rated 5 out of 5
Review posted

Love this bra!

The slate color is so beautiful and surprisingly is very supportive. It’s so breathable and I will definitely be getting one 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 Lorraine S.
Verified Buyer
I recommend this product
Size Purchased
4
How it Fits
True to Size
Age
45 - 54
Bra Size
38D
Rated 5 out of 5
Review posted

Darby215

Bras so comfortable and light! I love them!

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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?