![[Ksenia 1]](http://negativeunderwear.com/cdn/shop/products/Bra_SieveNW_Black_Ksenia_01_1024x1024.jpg?v=1677277814)
![[Ksenia 1]](http://negativeunderwear.com/cdn/shop/products/Bra_SieveNW_Black_Ksenia_02_1024x1024.jpg?v=1677277814)

![[Ksenia 1]](http://negativeunderwear.com/cdn/shop/products/Bra_SieveNW_Black_Ksenia_04_1024x1024.jpg?v=1677277814)
![[Vitoria 3+]](http://negativeunderwear.com/cdn/shop/products/Bra_SieveNonWirePlus_Black_Vitoria_02_1024x1024.jpg?v=1677277814)
![[Vitoria 3+]](http://negativeunderwear.com/cdn/shop/products/Bra_SieveNonWirePlus_Black_Vitoria_01_1024x1024.jpg?v=1677277814)
![[Vitoria 3+]](http://negativeunderwear.com/cdn/shop/products/Bra_SieveNonWirePlus_Black_Vitoria_03_1024x1024.jpg?v=1677277814)


![Thumbnail image #1 of Sieve Non-Wire Bra in Black [Ksenia 1]](http://negativeunderwear.com/cdn/shop/products/Bra_SieveNW_Black_Ksenia_01_154x.jpg?v=1677277814)
![Thumbnail image #2 of Sieve Non-Wire Bra in Black [Ksenia 1]](http://negativeunderwear.com/cdn/shop/products/Bra_SieveNW_Black_Ksenia_02_154x.jpg?v=1677277814)

![Thumbnail image #4 of Sieve Non-Wire Bra in Black [Ksenia 1]](http://negativeunderwear.com/cdn/shop/products/Bra_SieveNW_Black_Ksenia_04_154x.jpg?v=1677277814)
![Thumbnail image #5 of Sieve Non-Wire Bra in Black [Vitoria 3+]](http://negativeunderwear.com/cdn/shop/products/Bra_SieveNonWirePlus_Black_Vitoria_02_154x.jpg?v=1677277814)
![Thumbnail image #6 of Sieve Non-Wire Bra in Black [Vitoria 3+]](http://negativeunderwear.com/cdn/shop/products/Bra_SieveNonWirePlus_Black_Vitoria_01_154x.jpg?v=1677277814)
![Thumbnail image #7 of Sieve Non-Wire Bra in Black [Vitoria 3+]](http://negativeunderwear.com/cdn/shop/products/Bra_SieveNonWirePlus_Black_Vitoria_03_154x.jpg?v=1677277814)

![[Ksenia 1]](http://negativeunderwear.com/cdn/shop/products/Bra_SieveNW_Black_Ksenia_01_1024x1024.jpg?v=1677277814)
![[Ksenia 1]](http://negativeunderwear.com/cdn/shop/products/Bra_SieveNW_Black_Ksenia_02_1024x1024.jpg?v=1677277814)

![[Ksenia 1]](http://negativeunderwear.com/cdn/shop/products/Bra_SieveNW_Black_Ksenia_04_1024x1024.jpg?v=1677277814)
![[Vitoria 3+]](http://negativeunderwear.com/cdn/shop/products/Bra_SieveNonWirePlus_Black_Vitoria_02_1024x1024.jpg?v=1677277814)
![[Vitoria 3+]](http://negativeunderwear.com/cdn/shop/products/Bra_SieveNonWirePlus_Black_Vitoria_01_1024x1024.jpg?v=1677277814)
![[Vitoria 3+]](http://negativeunderwear.com/cdn/shop/products/Bra_SieveNonWirePlus_Black_Vitoria_03_1024x1024.jpg?v=1677277814)

Sieve Non-Wire Bra in Black
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 ->
Free U.S. shipping on orders over $100. Easy returns.
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
- Size Chart
- Made from a sheer Belgian power micromesh — nipples are visible
- 74% Polyamide (Nylon) 26% Elastane (Spandex)
- Wireless
- Hand wash in cold water, dry flat
FAQ
- Price-slashed, Annual Sale items with a red SALE tag are direct size exchange only (no refunds). Full-priced items purchased with the 20% off discount are eligible for refund, credit or exchange. Click here for more info on our Sale policies.
- 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
- Sara B.Verified BuyerSize Purchased 1How it Fits True to SizeAge Range 45 - 54Bra Size 32C3 minutes agoSize Purchased 1How it Fits True to SizeAge Range 45 - 54Bra Size 32CReviewingSieve Non-Wire Bra in CoralRated 5 out of 5 starsI’ve found my new favorite bra!
This is the bra I want to wear everyday. I didn’t realize I how uncomfortable my bras were until I tried this bra. Game changer!
Was this helpful? - D D.Verified BuyerSize Purchased 1How it Fits True to SizeAge Range 55 - 64Bra Size 32C6 hours agoSize Purchased 1How it Fits True to SizeAge Range 55 - 64Bra Size 32CReviewingSieve Non-Wire Bra in CherryRated 5 out of 5 starsLove the color
Great material. Very comfortable
Was this helpful? - D D.Verified BuyerSize Purchased 1How it Fits True to SizeAge Range 55 - 64Bra Size 32C6 hours agoSize Purchased 1How it Fits True to SizeAge Range 55 - 64Bra Size 32CReviewingSieve Non-Wire Bra in BlackRated 5 out of 5 starsLove it
Great fit. Great support. Very comfortable
Was this helpful? - Shannon C.Verified BuyerSize Purchased 5How it Fits True to SizeAge Range 45 - 54Bra Size 40D7 hours agoSize Purchased 5How it Fits True to SizeAge Range 45 - 54Bra Size 40DReviewingSieve Non-Wire Bra in BuffRated 5 out of 5 starsPerfect
This is a perfect bra for everyday wear!
Was this helpful? - Laura G.Verified BuyerSize Purchased 3How it Fits True to SizeAge Range 65+Bra Size 34D13 hours agoSize Purchased 3How it Fits True to SizeAge Range 65+Bra Size 34DReviewingSieve Non-Wire Bra in PeachRated 5 out of 5 starsOnce right size found, pure satisfaction
I loved how it fit -ALMOST. Ordered a size 2 and I couldn’t believe the comfort and natural support until I noticed a bit of a pop up from the top of the bra at center. So I ordered a 3 - AND NOW MY LOVE IS STRONG AND CONSTANT!!! And my ‘girls’ are singing.
Was this helpful?
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
