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Sieve Non-Wire Bra

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.

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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

Buy the set ->

Sieve Non-Wire Bra in Black Sieve Non-Wire Bra in Black (alternate view)
Sieve Non-Wire Bra in Black
Sieve Thong in Black Sieve Thong in Black (alternate view)
Sieve Thong in Black
Write a Review
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
Sieve Non-Wire Bra in Black
Reviewing
Sieve Non-Wire Bra in Black
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!

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Reviewed by Nina
Verified Buyer
Sieve Non-Wire Bra in Haze
Reviewing
Sieve Non-Wire Bra in Haze
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!

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Reviewed by Leslie S.
Verified Buyer
Sieve Non-Wire Bra in Buff
Reviewing
Sieve Non-Wire Bra in Buff
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.

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Non-Wire Bra Sizing

Non-Wire Bra Sizing Size Chart

* Non-wire bra sizing can vary by preference and if you're toward the top of a size range and prefer more coverage, you may want to size up. For styles available in + sizes (designed with additional support details for our larger cup customers), we find DD's can be on the cusp - if you prefer more coverage and support, we suggest the + bra equivalent for your band size.

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

@negativeunderwear