












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
- 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
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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- Heather R.Verified BuyerSize Purchased 2How it Fits A Little SmallAge Range 35 - 44Bra Size 34BYesterdaySize Purchased 2How it Fits A Little SmallAge Range 35 - 44Bra Size 34BReviewingSieve Racerback Bra in BuffGreat fit - size up one
Sizes up one based on reviews. Right choice. Great for under racerback tanks.
- Jen Y.Verified BuyerSize Purchased 2How it Fits True to SizeAge Range 45 - 54Bra Size 34B2 days agoSize Purchased 2How it Fits True to SizeAge Range 45 - 54Bra Size 34BReviewingSieve Racerback Bra in BuffComfortable + practical!
Desperately in need of new bras, I am happy with the quality of this brand.
- Joyce5 days agoReviewingSieve Racerback Bra in Buff5 Stars
. Minimalist, Modern Design
simple, elegant, and designed for women who want comfort over frills.
2. Comfortable Materials
The bras use breathable, lightweight fabrics that work well for all-day wear, even in warmer weather.
3. Supportive without Wires
Despite being wire-free, the racerback styles generally offer moderate support—especially appreciated by those with smaller to medium busts.
4. No Show Under Clothes
The racerback design and seamless edges make them great under tanks and fitted tops.
Overall a great wear with great comfort.
- Joyce5 days agoReviewingSieve Racerback Bra in Babe5 Stars
. Minimalist, Modern Design
, simple, elegant, and designed for women who want comfort over frills.
2. Comfortable , The bras use breathable, lightweight fabrics that work well for all-day wear, even in warmer weather.
3. Supportive without Wires
Despite being wire-free, the racerback styles generally offer moderate support—especially appreciated by those with smaller to medium busts.
4. No Show Under Clothes
The racerback design and seamless edges make them great under tanks and fitted tops.
Overall a great fit and design .
- Marian T.Verified BuyerSize Purchased 5+How it Fits True to SizeAge Range 45 - 54Bra Size 36C1 week agoSize Purchased 5+How it Fits True to SizeAge Range 45 - 54Bra Size 36CReviewingSieve Racerback Bra in Babelike butter
this bra is so comfy. feels like no bra but with support. highly recommend