![Thumbnail image #1 of Sieve Non-Wire Bra in Black [Ksenia 1]](http://negativeunderwear.com/cdn/shop/files/PDP-SieveNonWire-Black_154x154.jpg?v=1697147784)
![Thumbnail image #2 of Sieve Non-Wire Bra in Black [Ksenia 1]](http://negativeunderwear.com/cdn/shop/products/Bra_SieveNW_Black_Ksenia_04_154x154.jpg?v=1697147784)
![Thumbnail image #3 of Sieve Non-Wire Bra in Black [Ksenia 1]](http://negativeunderwear.com/cdn/shop/products/Bra_SieveNW_Black_Ksenia_01_154x154.jpg?v=1697147784)

![Thumbnail image #5 of Sieve Non-Wire Bra in Black [Vitoria 3+]](http://negativeunderwear.com/cdn/shop/files/SieveNon-WirePlus_Vitoria_NoNip_154x154.png?v=1704468855)
![Thumbnail image #6 of Sieve Non-Wire Bra in Black [Vitoria 3+]](http://negativeunderwear.com/cdn/shop/products/Bra_SieveNonWirePlus_Black_Vitoria_03_154x154.jpg?v=1704468855)
![Thumbnail image #7 of Sieve Non-Wire Bra in Black [Vitoria 3+]](http://negativeunderwear.com/cdn/shop/products/Bra_SieveNonWirePlus_Black_Vitoria_01_154x154.jpg?v=1704468855)

![retouched image [Ksenia 1]](http://negativeunderwear.com/cdn/shop/files/PDP-SieveNonWire-Black_thumb.jpg?v=1697147784)
![[Ksenia 1]](http://negativeunderwear.com/cdn/shop/products/Bra_SieveNW_Black_Ksenia_04_thumb.jpg?v=1697147784)
![[Ksenia 1]](http://negativeunderwear.com/cdn/shop/products/Bra_SieveNW_Black_Ksenia_01_thumb.jpg?v=1697147784)

![[Vitoria 3+]](http://negativeunderwear.com/cdn/shop/files/SieveNon-WirePlus_Vitoria_NoNip_thumb.png?v=1704468855)
![[Vitoria 3+]](http://negativeunderwear.com/cdn/shop/products/Bra_SieveNonWirePlus_Black_Vitoria_03_thumb.jpg?v=1704468855)
![[Vitoria 3+]](http://negativeunderwear.com/cdn/shop/products/Bra_SieveNonWirePlus_Black_Vitoria_01_thumb.jpg?v=1704468855)

Sieve Non-Wire Bra in Black
Sieve Non-Wire Bra
Our best selling bra for a reason.
The most supportive of our wireless bras. Great shape, naturally smoothing, airy light and sexy sheer — Belgian micromesh might just be magic. Create a custom 2 Pack ->
Buy more, save $
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Description
Our best selling bra for a reason.
The most supportive of our wireless bras. Great shape, naturally smoothing, airy light and sexy sheer — Belgian micromesh might just be magic.
Fit
- Size Chart
- Use this as a guide. Preference is a huge factor — if you’re near the top of a size range and/or prefer more coverage, you may want to size up.
Fabric + Care
- Made from a sheer Belgian power micromesh — nipples are visible
- 74% Polyamide (Nylon) 26% Elastane (Spandex)
- Wireless
- Certified Safe: OEKO-TEX® STANDARD 100 #23.HCN.86212 by Hohenstein HTTI
- Hand wash in cold water, dry flat
FAQ
- Price-slashed items are either exchange only or final sale. Any item marked as "exchange only" are eligible for direct size exchange only (aka no refunds). Items marked as "final sale" are not eligible for returns or exchanges.
- All full-priced, 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
![[Ksenia 1]](http://negativeunderwear.com/cdn/shop/products/Bra_SieveNW_Black_Ksenia_01.jpg?v=1697147784&width=1445)
![retouched image [Ksenia 1]](http://negativeunderwear.com/cdn/shop/files/PDP-SieveNonWire-Black.jpg?v=1697147784&width=1445)
![[Ksenia 1]](http://negativeunderwear.com/cdn/shop/products/Bra_SieveNW_Black_Ksenia_04.jpg?v=1697147784&width=1445)

![[Vitoria 3+]](http://negativeunderwear.com/cdn/shop/files/SieveNon-WirePlus_Vitoria_NoNip.png?v=1704468855&width=1445)
![[Vitoria 3+]](http://negativeunderwear.com/cdn/shop/products/Bra_SieveNonWirePlus_Black_Vitoria_03.jpg?v=1704468855&width=1445)
![[Vitoria 3+]](http://negativeunderwear.com/cdn/shop/products/Bra_SieveNonWirePlus_Black_Vitoria_01.jpg?v=1704468855&width=1445)


Non-Wire Bra Sizing
Your underbust: | A | B | C | D | DD | DDD | G | |
---|---|---|---|---|---|---|---|---|
24-26" | 30 | 0 | 0 | 0 | 1 | 1* | 1+ | |
26-28" | 32 | 0 | 0 | 1 | 2 | 2* | 1+ | 1+ |
28-30" | 34 | 1 | 1 | 2 | 2 | 3* | 2+ | 2+ |
30-32" | 36 | 1 | 2 | 3 | 3 | 4* | 3+ | 3+ |
32-34" | 38 | 3 | 3 | 4 | 4 | 5* | 4+ | 4+ |
35-38" | 40 | 3 | 5 | 5 | 5 | 5* | 5+ | 5+ |
38-40" | 42 | 5 | 5 | 5 | 5* |
* 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.
Btw, the size nomenclature has changed for Bra Tops. Here's the conversion:
XS=0, S=1, M=2, L=3, XL=4, XXL=5
Q’s about sizing or fit? Email us at hello@negativeunderwear.com
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- Jasmine L.Verified BuyerSize Purchased 3How it Fits True to SizeAge Range 35 - 44Bra Size 36D10 minutes agoSize Purchased 3How it Fits True to SizeAge Range 35 - 44Bra Size 36DReviewingSieve Non-Wire Bra in SlateRated 5 out of 5 starsSo perfect!
I had a breast lift a few years ago & it is hard for me to find bras that are comfortable against my scars. This is! I would absolutely recommend.
Was this helpful? - Rocio L.Verified BuyerSize Purchased 3How it Fits True to SizeAge Range 25 - 34Bra Size 36C2 days agoSize Purchased 3How it Fits True to SizeAge Range 25 - 34Bra Size 36CReviewingSieve Non-Wire Bra in BlackRated 5 out of 5 starsLoved the fit
The fabric is a little see through which I liked, loved the support
Was this helpful? - Christine5 days agoReviewingSieve Non-Wire Bra in BuffRated 5 out of 5 stars5 Stars
Perfect
Was this helpful? - Kim G.Verified BuyerSize Purchased 3How it Fits True to SizeAge Range 65+Bra Size 34B6 days agoSize Purchased 3How it Fits True to SizeAge Range 65+Bra Size 34BReviewingSieve Non-Wire Bra in BlackRated 5 out of 5 starsBeautiful bra and excellent customer service
Negative went above and beyond to ensure delivery of my purchase.
Was this helpful? - Jennifer G.Verified BuyerSize Purchased 1How it Fits True to SizeAge Range 45 - 54Bra Size 34C1 week agoSize Purchased 1How it Fits True to SizeAge Range 45 - 54Bra Size 34CReviewingSieve Non-Wire Bra in WhiteRated 5 out of 5 starsComfortable and breathable
This is my favorite bra and extremely comfortable. I’ll definitely be buying in more colors!
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