Your cart
Free U.S. Shipping on orders over $100; easy returns
International Shipping now available!
Back again: shop our latest Restock
Sieve Non-Wire Bra in Black and in Peach and in Slate (3 Pack)
Sieve Non-Wire Bra in Black and in Peach and in Slate (3 Pack)
Sieve Non-Wire Bra in Black and in Peach and in Slate (3 Pack)
Sieve Non-Wire Bra in Black and in Peach and in Slate (3 Pack)
Sieve Non-Wire Bra in Black and in Peach and in Slate (3 Pack)
Sieve Non-Wire Bra in Black and in Peach and in Slate (3 Pack)
Sieve Non-Wire Bra in Black and in Peach and in Slate (3 Pack)
  • Thumbnail image #1 of Sieve Non-Wire Bra in Black and in Peach and in Slate (3 Pack)
  • Thumbnail image #2 of Sieve Non-Wire Bra in Black and in Peach and in Slate (3 Pack)
  • Thumbnail image #3 of Sieve Non-Wire Bra in Black and in Peach and in Slate (3 Pack)
  • Thumbnail image #4 of Sieve Non-Wire Bra in Black and in Peach and in Slate (3 Pack)
  • Thumbnail image #5 of Sieve Non-Wire Bra in Black and in Peach and in Slate (3 Pack)
  • Thumbnail image #6 of Sieve Non-Wire Bra in Black and in Peach and in Slate (3 Pack)
  • Thumbnail image #7 of Sieve Non-Wire Bra in Black and in Peach and in Slate (3 Pack)
Product photo #1 of Sieve Non-Wire Bra in Black and in Peach and in Slate (3 Pack) Product photo #2 of Sieve Non-Wire Bra in Black and in Peach and in Slate (3 Pack) Product photo #3 of Sieve Non-Wire Bra in Black and in Peach and in Slate (3 Pack) Product photo #4 of Sieve Non-Wire Bra in Black and in Peach and in Slate (3 Pack) Product photo #5 of Sieve Non-Wire Bra in Black and in Peach and in Slate (3 Pack) Product photo #6 of Sieve Non-Wire Bra in Black and in Peach and in Slate (3 Pack) Product photo #7 of Sieve Non-Wire Bra in Black and in Peach and in Slate (3 Pack)

Sieve Non-Wire Bra

Rated 4.6 out of 5
Based on 3253 reviews

Our #1 best seller x3


The most supportive of our wireless bras. Supportive, smoothing, airy light, and sexy sheer — Belgian micromesh might just be magic. 
Sieve Non-Wire Bra in Black Sieve Non-Wire Bra in Black (alternate view)
Sieve Non-Wire Bra in Black
Sieve Non-Wire Bra in Peach Sieve Non-Wire Bra in Peach (alternate view)
Sieve Non-Wire Bra in Peach
Sieve Non-Wire Bra in Slate Sieve Non-Wire Bra in Slate (alternate view)
Sieve Non-Wire Bra in Slate

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.

Fabric + Care

  • Size Chart
  • Made from a sheer Belgian power micromesh — nipples are visible
  • 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

Most popular packs ->

Only a few left!
Sieve Non-Wire Bra in Black and in Buff (2 Pack) Sieve Non-Wire Bra in Black and in Buff (2 Pack) (alternate view) Sieve Non-Wire Bra in Black and in Buff (2 Pack) $123
Only a few left!
Sieve Triangle Bra in Black and in Buff and in Slate (3 Pack) Sieve Triangle Bra in Black and in Buff and in Slate (3 Pack) (alternate view) Sieve Triangle Bra in Black and in Buff and in Slate (3 Pack) $180
Only a few left!
Silky Non-Wire Bra in Black and in Buff (2 Pack) Silky Non-Wire Bra in Black and in Buff (2 Pack) (alternate view) Silky Non-Wire Bra in Black and in Buff (2 Pack) $124
Only a few left!
Sieve Non-Wire Bra in Black and in Haze and in Moon (3 Pack) Sieve Non-Wire Bra in Black and in Haze and in Moon (3 Pack) (alternate view) Sieve Non-Wire Bra in Black and in Haze and in Moon (3 Pack) $180
Write a Review
average rating 4.6 out of 5
Based on 3253 reviews
  • 5 Stars
    2512 Reviews
  • 4 Stars
    345 Reviews
  • 3 Stars
    198 Reviews
  • 2 Stars
    114 Reviews
  • 1 Star
    84 Reviews
90% of reviewers would recommend this product to a friend
Overall
Rated 0 on a scale of minus 2 to 2, where minus 2 is Hated it, 0 is Meh and 2 is Loved it
Quality
Rated 4 out of 5
Comfort
Rated 4 out of 5
3253 Reviews
Reviewed by Molly A.
Verified Buyer
Review posted
Sieve Non-Wire Bra in Buff
Reviewing
Sieve Non-Wire Bra in Buff
I recommend this product
Rated 5 out of 5
Size Purchased
3
How it Fits
True to Size
Age Range
25 - 34
Bra Size
34DD/E

It really is the most comfortable bra!

Truly I was hesitant to spend $60+ on a bra, but this really is the most comfortable and supportive bra. The quality is beautiful and is well worth the price. The fabric feels barely there, but still provides great coverage. I would 100% recommend!

Loading...
Overall
Rated 2 on a scale of minus 2 to 2, where minus 2 is Hated it, 0 is Meh and 2 is Loved it
Quality
Rated 5 out of 5
Comfort
Rated 5 out of 5
Was this helpful?
Reviewed by Gaye P.
Verified Buyer
Review posted
Sieve Non-Wire Bra in White
Reviewing
Sieve Non-Wire Bra in White
I recommend this product
Rated 5 out of 5
Size Purchased
3
How it Fits
True to Size
Age Range
45 - 54
Bra Size
34D

Supportive & comfortable

Amazing!! Having big boobs I’m always skeptical if non-wired bras will be supportive enough. This bra is perfect. I’ll never go back to underwire again!

Loading...
Overall
Rated 2 on a scale of minus 2 to 2, where minus 2 is Hated it, 0 is Meh and 2 is Loved it
Quality
Rated 5 out of 5
Comfort
Rated 5 out of 5
Was this helpful?
Reviewed by Samantha F.
Verified Buyer
Review posted
Sieve Non-Wire Bra in Buff
Reviewing
Sieve Non-Wire Bra in Buff
I recommend this product
Rated 5 out of 5
Size Purchased
2
How it Fits
True to Size
Age Range
45 - 54
Bra Size
34D

Impressed.

Comfortable. Thin straps comfortable despite my size, 34D

Loading...
Overall
Rated 2 on a scale of minus 2 to 2, where minus 2 is Hated it, 0 is Meh and 2 is Loved it
Quality
Rated 5 out of 5
Comfort
Rated 5 out of 5
Was this helpful?

Non-Wire Bra Sizing

Non-Wire Bra Sizing Size Chart

* 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

@negativeunderwear