Sieve Triangle Bra in White Boa
Surprising support. Deep v neckline.
Our signature Sieve mesh in a lower coverage triangle cut. Great shape - no pad or wire included. 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.
- Triangle cut has lower coverage in both the cups and the sides.
Fabric + Care
- Size Chart
- Made from a sheer Belgian power micromesh — nipples are visible
- Tonal medium/pale grey snakeskin print on white base
- 74% Polyamide (Nylon) 26% Elastane (Spandex)
- Wireless
- Hand wash in cold water, dry flat
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
- Kami H.Verified BuyerSize Purchased 3How it Fits True to SizeAge Range 35 - 44Bra Size 36C3 minutes agoSize Purchased 3How it Fits True to SizeAge Range 35 - 44Bra Size 36CReviewingSieve Triangle Bra in CherryRated 5 out of 5 starsComfortable!
This bra is so comfortable
Was this helpful? - Ellen B.Verified BuyerSize Purchased 5How it Fits True to SizeAge Range 65+Bra Size 38C2 hours agoSize Purchased 5How it Fits True to SizeAge Range 65+Bra Size 38CReviewingSieve Triangle Bra in BuffRated 5 out of 5 starsBought the white boa and buff.
Love the bras.
Was this helpful? - Ellen B.Verified BuyerSize Purchased 5How it Fits True to SizeAge Range 65+Bra Size 38C2 hours agoSize Purchased 5How it Fits True to SizeAge Range 65+Bra Size 38CReviewingSieve Triangle Bra in White BoaRated 5 out of 5 starsLove the Sieve Triangle bra.
The reduced cut is both comfortable and sensual. I’m a size 38C, sized up to a 5, glad I did.
Was this helpful? - Kathleen S.Verified BuyerSize Purchased 5How it Fits True to SizeAge Range 18 - 24Bra Size 40C2 hours agoSize Purchased 5How it Fits True to SizeAge Range 18 - 24Bra Size 40CReviewingSieve Triangle Bra in Buff + WhiteRated 5 out of 5 starsLove!
Super pretty and flattering
Was this helpful? - Mallory D.Verified BuyerSize Purchased 5How it Fits True to SizeAge Range 25 - 34Bra Size 40C21 hours agoSize Purchased 5How it Fits True to SizeAge Range 25 - 34Bra Size 40CReviewingSieve Triangle Bra in BlackRated 5 out of 5 starsGreat alternative to underwire bras
I tried this bra because I was looking for one that gave the same level of lift, but without an underwire, and this one did the trick! It is so comfortable and looks great.
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Non-Wire Bra Sizing

* 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
