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- Brittney, 3
- Ksenia, 1
![[Brittney 3]](http://negativeunderwear.com/cdn/shop/products/Bra_SieveTriangle_Navy_Brittney_02_thumb.jpg?v=1703225894)
![[Brittney 3]](http://negativeunderwear.com/cdn/shop/files/Bra_SieveTriangle_Navy_Brittney_01_NN_thumb.jpg?v=1703225894)
![[Brittney 3]](http://negativeunderwear.com/cdn/shop/products/Bra_SieveTriangle_Navy_Brittney_04_thumb.jpg?v=1703225894)
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![[Ksenia 1]](http://negativeunderwear.com/cdn/shop/products/Bra_SieveTriangle_Navy_Ksenia_02_thumb.jpg?v=1703225894)
![[Ksenia 1]](http://negativeunderwear.com/cdn/shop/products/Bra_SieveTriangle_Navy_Ksenia_01_thumb.jpg?v=1703225894)
![[Ksenia 1]](http://negativeunderwear.com/cdn/shop/products/Bra_SieveTriangle_Navy_Ksenia_04_thumb.jpg?v=1703225894)
![[Brittney 3]](http://negativeunderwear.com/cdn/shop/products/Bra_SieveTriangle_Navy_Brittney_02_thumb.jpg?v=1703225894)
![[Brittney 3]](http://negativeunderwear.com/cdn/shop/files/Bra_SieveTriangle_Navy_Brittney_01_NN_thumb.jpg?v=1703225894)
![[Brittney 3]](http://negativeunderwear.com/cdn/shop/products/Bra_SieveTriangle_Navy_Brittney_04_thumb.jpg?v=1703225894)
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![[Ksenia 1]](http://negativeunderwear.com/cdn/shop/products/Bra_SieveTriangle_Navy_Ksenia_02_thumb.jpg?v=1703225894)
![[Ksenia 1]](http://negativeunderwear.com/cdn/shop/products/Bra_SieveTriangle_Navy_Ksenia_01_thumb.jpg?v=1703225894)
![[Ksenia 1]](http://negativeunderwear.com/cdn/shop/products/Bra_SieveTriangle_Navy_Ksenia_04_thumb.jpg?v=1703225894)
![[Brittney 3]](http://negativeunderwear.com/cdn/shop/products/Bra_SieveTriangle_Navy_Brittney_02_thumb.jpg?v=1703225894)
Sieve Triangle Bra in Navy
Sieve Triangle Bra
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 ->
Buy more, save $
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Description
Surprising support. Deep v neckline.
Our signature Sieve mesh in a lower coverage triangle cut. Great shape - no pad or wire included.
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
- 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 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.
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
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
- Robert E.Verified BuyerSize Purchased 3How it Fits True to SizeAge Range 45 - 54Bra Size 34D4 minutes agoSize Purchased 3How it Fits True to SizeAge Range 45 - 54Bra Size 34DReviewingSieve Triangle Bra in BlackRated 5 out of 5 starsAmazing
My wife is so happy with it
Was this helpful? - Andrea F.Verified BuyerSize Purchased 1How it Fits True to SizeAge Range 25 - 34Bra Size 34BYesterdaySize Purchased 1How it Fits True to SizeAge Range 25 - 34Bra Size 34BReviewingSieve Triangle Bra in BlackRated 5 out of 5 starsRepeat buy
I love this bra, so comfortable it feels like nothing. I kept grabbing this bra so I had to order another
Was this helpful? - Anne M.Verified BuyerSize Purchased 2How it Fits True to SizeAge Range 45 - 54Bra Size 32DD/E3 days agoSize Purchased 2How it Fits True to SizeAge Range 45 - 54Bra Size 32DD/EReviewingSieve Triangle Bra in Buff + WhiteRated 5 out of 5 starsSexy, comfy, and versatile
I bought the 2 pack. I love both these. This one is my fav cause I like the whole " nude" color look. This bra is the best wireless triangle bra you'll find. It looks amazingly sexy and is SOOOO comfortable.
Was this helpful? - Anne M.Verified BuyerSize Purchased 2How it Fits True to SizeAge Range 45 - 54Bra Size 32DD/E3 days agoSize Purchased 2How it Fits True to SizeAge Range 45 - 54Bra Size 32DD/EReviewingSieve Triangle Bra in SlateRated 5 out of 5 starsBest wireless bra out there!!
This bra is so comfy and it looks amazing! The customer service was so nice and helpful.
Was this helpful? - Sherry K.Verified BuyerSize Purchased 4How it Fits True to SizeAge Range 45 - 54Bra Size 36DD/E6 days agoSize Purchased 4How it Fits True to SizeAge Range 45 - 54Bra Size 36DD/EReviewingSieve Triangle Bra in BlackRated 5 out of 5 starsLove!!!
Love this bra! Also have it in Slate wish it would come in Gray
Was this helpful?
- Robert E.Verified BuyerSize Purchased 3How it Fits True to SizeAge Range 45 - 54Bra Size 34D16 hours agoSize Purchased 3How it Fits True to SizeAge Range 45 - 54Bra Size 34DReviewingSieve Triangle Bra in BlackRated 5 out of 5 starsAmazing
My wife is so happy with it
Was this helpful? - Andrea F.Verified BuyerSize Purchased 1How it Fits True to SizeAge Range 25 - 34Bra Size 34B2 days agoSize Purchased 1How it Fits True to SizeAge Range 25 - 34Bra Size 34BReviewingSieve Triangle Bra in BlackRated 5 out of 5 starsRepeat buy
I love this bra, so comfortable it feels like nothing. I kept grabbing this bra so I had to order another
Was this helpful? - Anne M.Verified BuyerSize Purchased 2How it Fits True to SizeAge Range 45 - 54Bra Size 32DD/E4 days agoSize Purchased 2How it Fits True to SizeAge Range 45 - 54Bra Size 32DD/EReviewingSieve Triangle Bra in Buff + WhiteRated 5 out of 5 starsSexy, comfy, and versatile
I bought the 2 pack. I love both these. This one is my fav cause I like the whole " nude" color look. This bra is the best wireless triangle bra you'll find. It looks amazingly sexy and is SOOOO comfortable.
Was this helpful? - Anne M.Verified BuyerSize Purchased 2How it Fits True to SizeAge Range 45 - 54Bra Size 32DD/E4 days agoSize Purchased 2How it Fits True to SizeAge Range 45 - 54Bra Size 32DD/EReviewingSieve Triangle Bra in SlateRated 5 out of 5 starsBest wireless bra out there!!
This bra is so comfy and it looks amazing! The customer service was so nice and helpful.
Was this helpful? - Sherry K.Verified BuyerSize Purchased 4How it Fits True to SizeAge Range 45 - 54Bra Size 36DD/E1 week agoSize Purchased 4How it Fits True to SizeAge Range 45 - 54Bra Size 36DD/EReviewingSieve Triangle Bra in BlackRated 5 out of 5 starsLove!!!
Love this bra! Also have it in Slate wish it would come in Gray
Was this helpful?