











Sieve Racerback Bra in Black
Minimal visibility. Surprising support.
Our most-requested style. A refined T-back, front closure, wireless bra, in our best-selling Sieve power mesh.
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.
- 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
- Size Chart
- Made from a sheer Belgian power micromesh — nipples are visible
- 74% Polyamide (Nylon) 26% Elastane (Spandex)
- 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.
- 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
- Natalia S.Verified BuyerSize Purchased 2How it Fits True to SizeAge Range 35 - 44Bra Size 36B3 minutes agoSize Purchased 2How it Fits True to SizeAge Range 35 - 44Bra Size 36BReviewingSieve Racerback Bra in CoralRated 5 out of 5 starsFantastic!
Love it! Comfy and makes everything look 👌
Was this helpful? - Cindy P.Verified BuyerSize Purchased 2How it Fits A Little SmallAge Range 55 - 64Bra Size 36B6 hours agoSize Purchased 2How it Fits A Little SmallAge Range 55 - 64Bra Size 36BReviewingSieve Racerback Bra in CoralRated 4 out of 5 starsRuns a little small
Love the style.
Was this helpful? - Martha V.Verified BuyerSize Purchased 1How it Fits True to SizeAge Range 55 - 64Bra Size 34B21 hours agoSize Purchased 1How it Fits True to SizeAge Range 55 - 64Bra Size 34BReviewingSieve Racerback Bra in BlackRated 5 out of 5 starsMs
Comfy!
Was this helpful? - Tanis A.Verified BuyerSize Purchased 3How it Fits A Little BigAge Range 45 - 54Bra Size 32DYesterdaySize Purchased 3How it Fits A Little BigAge Range 45 - 54Bra Size 32DReviewingSieve Racerback Bra in BlackRated 5 out of 5 starsLove it
I’m kinda in between sizes but the style and material is so nice
Was this helpful? - Barbara W.Verified BuyerSize Purchased 5How it Fits True to SizeAge Range 65+Bra Size 40D2 days agoSize Purchased 5How it Fits True to SizeAge Range 65+Bra Size 40DReviewingSieve Racerback Bra in CoralRated 5 out of 5 starsLove the color
And the fit is perfect. Great for those of us who have girls of slightly different sizes.
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
