- Ksenia, 1
- Vitoria, 3+
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 ->
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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 60 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
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
- Amanda M.Verified BuyerSize Purchased 5How it Fits True to SizeAge Range 45 - 54Bra Size 40D11 minutes agoSize Purchased 5How it Fits True to SizeAge Range 45 - 54Bra Size 40DReviewingSieve Non-Wire Bra in BlackRated 5 out of 5 starsComfortable with light support
I'm 49 years old, size 40D and I I found it supportive and comfortable. Felt confident in a sweatshirt.
Was this helpful? - Blaine A.Verified BuyerSize Purchased 3How it Fits A Little SmallAge Range 35 - 44Bra Size 34B5 hours agoSize Purchased 3How it Fits A Little SmallAge Range 35 - 44Bra Size 34BReviewingSieve Non-Wire Bra in BuffRated 4 out of 5 starsGood bra
I like it
Was this helpful? - Danielle D.Verified BuyerSize Purchased 3+How it Fits True to SizeAge Range 45 - 54Bra Size 36D6 hours agoSize Purchased 3+How it Fits True to SizeAge Range 45 - 54Bra Size 36DReviewingSieve Non-Wire Bra in SlateRated 5 out of 5 starsThese are the best
I love these bras. I’ve had the Sieve in size 3 and would have bulge above the top and had the Sieve in size 4 which is just not supportive enough so I decided to try the 3+ and these things are amazing. Never had a bra fit so well and be so comfortable and non-bulky. If you don’t like lined bras, like minimal material but support find the right size in these. According to the size chart I should be a 3 or 4 but the 3+ are perfect for me.
Was this helpful? - Julia O.Verified BuyerSize Purchased 1How it Fits True to SizeAge Range 25 - 34Bra Size 32C8 hours agoSize Purchased 1How it Fits True to SizeAge Range 25 - 34Bra Size 32CReviewingSieve Non-Wire Bra in NavyRated 5 out of 5 starsLove!
Have the Sieve in 4 colors and love it!
Was this helpful? - Julia O.Verified BuyerSize Purchased 1How it Fits True to SizeAge Range 25 - 34Bra Size 32C8 hours agoSize Purchased 1How it Fits True to SizeAge Range 25 - 34Bra Size 32CReviewingSieve Non-Wire Bra in BlackRated 5 out of 5 starsObsessed
Obsessed with this bra have in 4 colors! I usually am a 32C~
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