












Sieve Racerback Bra in Black
Sieve Racerback Bra
Minimal visibility. Surprising support.
Our most-requested style. A refined T-back, front closure, wireless bra, in our best-selling Sieve power mesh.
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Description
Minimal visibility. Surprising support.
Our most-requested style. A refined T-back, front closure, wireless bra, in our best-selling Sieve power mesh.
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.
- Single T-strap back for minimal visibility under racerback or cutaway tops
- Plunging deep-V front neckline with front click closure
- Metallic front closure clicks closed so you know you're secure
- Adjustable shoulder straps and a narrow, stretch-fit bottom band
Fabric + Care
- Made from a sheer Belgian power micromesh — nipples are visible
- 74% Polyamide (Nylon) 26% Elastane (Spandex)
- Certified Safe: OEKO-TEX® STANDARD 100 #23.HCN.86212 by Hohenstein HTTI
- Wireless
- Discreet metal front click closure and strap adjustment details
- Machine wash warm, hang dry, wear often
FAQ
- 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.
- 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.
- 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.
Q’s about sizing or fit? Email us at hello@negativeunderwear.com
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- Sharon L.Verified BuyerSize Purchased 3How it Fits True to SizeAge Range 35 - 44Bra Size 34DD/E53 minutes agoSize Purchased 3How it Fits True to SizeAge Range 35 - 44Bra Size 34DD/EReviewingSieve Racerback Bra in SeaRated 5 out of 5 starsBeautiful
Absolutely beautiful and fits perfectly!
Was this helpful? - Britt G.Verified BuyerSize Purchased 3How it Fits True to SizeAge Range 35 - 44Bra Size 38B3 hours agoSize Purchased 3How it Fits True to SizeAge Range 35 - 44Bra Size 38BReviewingSieve Racerback Bra in BuffRated 5 out of 5 starsPerfect Racerback I have found!
Finally a racerback bra that it's digging into me. I have always found it so hard to find a good one. This is it!
5'6" / 152lbs - ordered a size 3
Was this helpful? - Mary C.Verified BuyerSize Purchased 2How it Fits A Little SmallAge Range 35 - 44Bra Size 36BYesterdaySize Purchased 2How it Fits A Little SmallAge Range 35 - 44Bra Size 36BReviewingSieve Racerback Bra in BuffRated 5 out of 5 starsLove this!
So hard to find a racerback that is also cute. This fits great.
Was this helpful? - Moira2 days agoReviewingSieve Racerback Bra in SeaRated 4 out of 5 stars4 Stars
Comfortable but cups need to have more coverage
Was this helpful? - Jill I. S.Verified BuyerSize Purchased 2How it Fits True to SizeAge Range 45 - 54Bra Size 32C2 days agoSize Purchased 2How it Fits True to SizeAge Range 45 - 54Bra Size 32CReviewingSieve Racerback Bra in BabeRated 4 out of 5 starspretty color, very feminine
sexy bra, beautiful color
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