International Shipping now available!

Free U.S. shipping on orders over $100, free exchanges, easy returns

Buy more, save money
[MK 1]
[MK 1]
[MK 1]
[MK 1]
[Hannah 4+]
[Hannah 4+]
[Hannah 4+]
[Hannah 4+]
  • Thumbnail image #1 of Sieve Non-Wire Bra in Black [MK 1]
  • Thumbnail image #2 of Sieve Non-Wire Bra in Black [MK 1]
  • Thumbnail image #3 of Sieve Non-Wire Bra in Black [MK 1]
  • Thumbnail image #4 of Sieve Non-Wire Bra in Black [MK 1]
  • Thumbnail image #5 of Sieve Non-Wire Bra in Black [Hannah 4+]
  • Thumbnail image #6 of Sieve Non-Wire Bra in Black [Hannah 4+]
  • Thumbnail image #7 of Sieve Non-Wire Bra in Black [Hannah 4+]
  • Thumbnail image #8 of Sieve Non-Wire Bra in Black [Hannah 4+]
Buy more, save money
Product photo #1 of Sieve Non-Wire Bra in Black [MK 1] Product photo #2 of Sieve Non-Wire Bra in Black [MK 1] Product photo #3 of Sieve Non-Wire Bra in Black [MK 1] Product photo #4 of Sieve Non-Wire Bra in Black [MK 1] Product photo #5 of Sieve Non-Wire Bra in Black [Hannah 4+] Product photo #6 of Sieve Non-Wire Bra in Black [Hannah 4+] Product photo #7 of Sieve Non-Wire Bra in Black [Hannah 4+] Product photo #8 of Sieve Non-Wire Bra in Black [Hannah 4+]

Sieve Non-Wire Bra in Black

Rated 4.5 out of 5
Based on 2353 reviews

Our best selling bra for a reason.


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

Buy more and save $

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
  • 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 30 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
average rating 4.5 out of 5
Based on 2353 reviews
  • 5 Stars
    1794 Reviews
  • 4 Stars
    254 Reviews
  • 3 Stars
    152 Reviews
  • 2 Stars
    92 Reviews
  • 1 Star
    61 Reviews
90% of reviewers would recommend this product to a friend
2353 Reviews
Reviewed by Teresa S.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Nice!

So so so comfortable. Supportive and things stay in place with the mesh material. Love it. Hope the underwire sieve bra will come in my size soon!

Loading...
Was this helpful?
Reviewed by Nina
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Perfect WFH bra!

Since the pandemic started, I’ve been seeking the most comfortable and minimalistic non-wire bra. I tried a bunch of different brands and styles but they either didn’t offer enough support or dug into my skin, making me want to rip them off immediately. I knew it was a match made in heaven when I tried on this bra! It supports my breasts perfectly, it doesn’t feel like I’m wearing anything, the sieve material allows my skin to breathe, and my boyfriend loves the see-through material :). I just ordered a few more! Thanks Negative Underwear!

Loading...
Was this helpful?
Reviewed by Leslie S.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Finally! A comfortable bra!

I love this bra. Sizing chart gave me perfect size. The bra is light weight and offers some support but isn't tight or bulky. I've been looking for a bra just like this and finally found it.

Loading...
Was this helpful?