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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 4.6 out of 5
948 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
  • 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 4.6 out of 5
Based on 948 reviews
  • 5 Stars
    734 Reviews
  • 4 Stars
    112 Reviews
  • 3 Stars
    60 Reviews
  • 2 Stars
    30 Reviews
  • 1 Star
    12 Reviews
91% 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
948 Reviews
Reviewed by Lilian G.
Verified Buyer
I recommend this product
Size Purchased
2
How it Fits
A Little Small
Age
25 - 34
Bra Size
34D
Rated 4 out of 5
Review posted

Super comfy

the bra fits for the most part. I'm a 34D and I got a size 2, I spill out after multiple hours and i'm wondering if the size 3 was the better option but overall it's super comfy, there are four different hooks so you can adjust how tight around your body it goes. I like it thought, the cup feels really good against my skin!

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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 4 out of 5
Comfort
Rated 5 out of 5
Was this helpful?
Reviewed by Nicole R.
Verified Buyer
I recommend this product
Size Purchased
1
How it Fits
True to Size
Age
25 - 34
Bra Size
34A
Rated 5 out of 5
Review posted

The best bra!

The most comfortable bra ever! Holds up all day, feels like nothing. I used to only wear underwire and now I only wear these!

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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
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Reviewed by Tracy L.
Verified Buyer
I recommend this product
Size Purchased
4
How it Fits
True to Size
Age
55 - 64
Bra Size
40C
Rated 4 out of 5
Review posted

My favorite bra ever!

I would have given 5 stars just for the liking of it, but one down fall is, I find it a very pricey bra, considering how little material there is. I purchased the no wire sieve bra in slate and have been wearing if for about a week. I do love it. Just wish I could buy another 5 without feeling like I am splurging on myself or "breaking the bank". Very comfortable, reasonable lift, I bought a size 5 even though the template didn't offer me a size 5 option so for this review had to pick a 4 (Im usually a 40 C) and the fit is just right. Certainly not perky, but enough to look normal. I will definitely be buying another. Would love to try another style, just afraid to change up what I know I love! You won't be disappointed.

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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 4 out of 5
Comfort
Rated 5 out of 5
Was this helpful?