Bras + Underwear

None of the padding. All the support.

Airy light and surprisingly strong — it’s not impossible, we made it.

*411*

• Made from a sheer Belgian power micromesh — nipples are visible
• Underwire bra with max comfort
• Velvety plush elastic underband
• Heat transferred care label = no itchy tags

Complete the Set Pair the Sieve Demi Bra with our Sieve Thong or Sieve String Thong for a coordinated everyday set. Crafted from the same sheer Belgian power micromesh, each piece offers lightweight breathability, a smooth, flexible fit, and barely-there comfort. Underwire, Unlined, Unapologetic The Sieve Demi Bra brings structured underwire support to our signature Sieve Collection, with unlined, unpadded demi cups for a natural shape. Crafted from sheer Belgian power micromesh (74% nylon, 26% elastane), certified to OEKO-TEX® STANDARD 100, the fabric is transparent, so nipples are visible. A velvety plush elastic underband and tagless heat-transfer care label provide added comfort. Rated 4.7 stars by 1,618 reviewers, with one calling it “your everyday bra but better.” Hand wash warm and dry flat. Part of the Sieve Collection The Sieve Demi Bra is part of our signature Sieve Collection, featuring sheer Belgian power micromesh designed for lightweight comfort and a barely-there feel. Explore the full collection, including the Sieve Non-Wire Bra, Sieve Triangle Bra, Sieve Bra Top, and Sieve Cutout Bra, each offering a different fit and level of support. Complete your everyday essentials with the coordinating Sieve Thong. FAQs Q: Is the Sieve Demi Bra underwire or wireless?
A: The Sieve Demi Bra features underwire support with unlined, unpadded demi cups for a natural shape and gentle lift. Its lightweight Belgian power micromesh provides a breathable, comfortable fit. Q: How is band/cup sizing different from Negative's 0–5 non-wire sizing?
A: The Sieve Demi Bra uses traditional bra sizing, with separate band and cup measurements for a more precise fit. Our non-wire styles use a numeric 0–5 sizing system, including extended cup options. Refer to our size chart to find your best fit. Q: Can I machine wash this bra?
A: We recommend hand washing the Sieve Demi Bra in warm water and laying it flat to dry. Machine washing is not recommended, as gentle care helps preserve the delicate micromesh fabric and fit. Q: Is the Sieve Demi Bra see-through?
A: Yes, the Sieve Demi Bra is made from sheer Belgian power micromesh with unlined, unpadded cups, so nipples are visible. The lightweight, breathable fabric offers a barely-there feel with comfortable underwire support. Q: Is this bra padded or lined?
A: No, the Sieve Demi Bra features unlined, unpadded demi cups made from sheer Belgian power micromesh. This lightweight fabric provides a natural shape and breathable comfort, with nipples visible through the material.

*FABRIC*

• 74% Polyamide (Nylon) 26% Elastane (Spandex)
• Hand wash in warm water, dry flat

Luxuriously soft. Lightweight feel.
A low rise boy short brief in a softer-than-soft luxe micromodal. The best underwear for sleep.

*411*

• Use this as a guide. If you prefer a looser fit, we recommend sizing up

*FABRIC*

• Wispy soft micro modal stretch fabric imported from Austria
• Drop-needle stitch creates a subtle, vertical stripe effect
• Diagonal princess seams at the front and back
• 91% Micro Modal 9% Lycra
• 100% Cotton gusset lining
• Certified Safe: OEKO-TEX® STANDARD 100 #23.HCN.86212 by Hohenstein HTTI
• Wash on delicates/cold, dry flat
• Do not bleach

Extra soft and stretchy. Comes as a three-pack.
A high-rise shortie that works as underwear or a lounge short featuring Cherry Print, Cherry and Black. Made with longer cotton fibers for a soft and smooth feel. Comes gift-ready in our exclusive holiday gift packaging.

*411*

• Use this as a guide. If you’re on the cusp and prefer a looser fit, we recommend sizing up.

*FABRIC*

• 3 Pack includes: 1x Cherry Print, 1x Cherry, 1x Black
• Cherry Print is a playful watercolor-style cherry design on a snow white base
• Cherry is a juicy maraschino red licorice fire engine tone
• Black is a raven deep noir tone
• 79% Cotton, 21% Elastane is breathable and flexible
• 100% Cotton gusset lining
• Machine wash warm, tumble dry low, wear often

High rise. Light and stretchy fabric. x3
A perfect 3 pack featuring Black, Cherry, and Cherry Print. A flattering high-rise brief made from our stretchy and light long-staple cotton. Comes gift-ready in our exclusive holiday gift packaging.

*411*

• Use this as a guide. If you’re on the cusp and prefer a looser fit, we recommend sizing up.

*FABRIC*

• 3 Pack includes 1x Black, 1x Cherry, and 1x Cherry Print
• Cherry Print is a playful watercolor-style cherry design on a snow white base
• Cherry is a juicy maraschino red licorice fire engine tone
• Black is a raven deep noir tone
• 79% Cotton, 21% Elastane is breathable and flexible
• 100% Cotton gusset lining
• Machine wash warm, tumble dry low, wear often

Next level soft. Our #1 non-wire cut.
So comfortable you can nap in it, so cute you’ll wanna tell all your friends about it. This is the perfect lounge bra.

*411*

• Use this as a guide. Preference is a huge factor — the benefit of a non-wire is they’re super flexible, so you will likely fit in more than one size
• Depending on how much coverage you like, size up or down accordingly

*FABRIC*

• Wispy soft micro modal stretch fabric imported from Austria
• Cerise is a rich and moody dried rose petal red tone
• Drop-needle stitch creates a subtle, vertical stripe effect
  
• Lined in the front for more opacity
  
• 91% Micro Modal 9% Lycra
• Certified Safe: OEKO-TEX® STANDARD 100 #23.HCN.86212 by Hohenstein HTTI
• Machine wash warm, no bleach, tumble dry low, cool iron, wear often

Impossibly soft. High leg.
Featuring a high thigh cut, cheeky bum, and faux fly grommet detail. This may be the pinnacle of cuteness.

*411*

• Use this as a guide. If you prefer a looser fit, we recommend sizing up

*FABRIC*

• Wispy soft micro modal stretch fabric imported from Austria
• Cerise is a rich and moody dried rose petal red tone
• Drop-needle stitch creates a subtle, vertical stripe effect
• 91% Micro Modal 9% Lycra
• 100% Cotton gusset lining
• Certified Safe: OEKO-TEX® STANDARD 100 #23.HCN.86212 by Hohenstein HTTI
  
• Wash on delicates/cold, dry flat
• Do not bleach

Dip-cut thong. Dreamy-soft fabric.
A flattering low-rise thong in our bestselling Whipped fabric.

*411*

• Use this as a guide. If you prefer a looser fit, we recommend sizing up

*FABRIC*

• Wispy soft micro modal stretch fabric imported from Austria
• Cerise is a rich and moody dried rose petal red tone
• Drop-needle stitch creates a subtle, vertical stripe effect
  
• 73% Micromodal, 17% Viscose, 10% Lycra
• 100% Cotton gusset lining
• Certified Safe: OEKO-TEX® STANDARD 100 #23.HCN.86212 by Hohenstein HTTI
  
• Machine wash warm, no bleach, tumble dry low, cool iron, wear often.

Deep plunge neckline. High gloss sheen.

A wireless, ultra-luxe triangle bralette: comfortable for day, glam for night, perfect for always.

*411*

• Use this as a guide. Preference is a huge factor — the benefit of a non-wire is they’re super flexible, so you will likely fit in more than one size
• Depending on how much coverage you like, size up or down accordingly

*FABRIC*

• Ultra luxe Belgian stretch nylon with the glossy feel and sheen of silk
• Cerise is a rich and moody dried rose petal red tone
• Double layered in the cups for extreme comfort
• Wide plush elastic band for added support
• Adjustable straps and hook & eye closure in the back
• Wireless
• 23% Lycra and 77% Nylon
• Certified Safe: OEKO-TEX® STANDARD 100 #23.HCN.86212 by Hohenstein HTTI
  
• Machine wash warm, hang dry, wear often

Barely there thong. High gloss sheen.

Under where? Our most minimal cut; seamless under anything and guaranteed to make you feel fancy.

*411*

• Use this as a guide - if you prefer a looser fit, we recommend sizing up
• Thin elastic waistband won’t dig
• Our most minimal, seamless underwear option
• Can be worn around the hips or pulled high to the natural waistline

*FABRIC*

• Ultra luxe Belgian stretch nylon with the glossy feel and sheen of silk
• Cerise is a rich and moody dried rose petal red tone
• 23% Lycra and 77% Nylon
  
• Certified Safe: OEKO-TEX® STANDARD 100 #23.HCN.86212 by Hohenstein HTTI
• Wash on delicates/cold, dry flat

Dip-cut thong. Cheeky and flattering.

A different take on the classic thong cut in our beloved Belgian micromesh.

*411*

• Use this as a guide. If you prefer a looser fit, we recommend sizing up

*FABRIC*

• Belgian power micromesh is subtly sheer
• Cerise is a rich and moody dried rose petal red tone
• 74% Polyamide (Nylon) 26% Elastane (Spandex)
• 100% Cotton gusset lining
• Certified Safe: OEKO-TEX® STANDARD 100 #23.HCN.86212 by Hohenstein HTTI
• Wash on delicates/cold, dry flat

Dip-cut thong. Dreamy-soft fabric.
A flattering low-rise thong in our bestselling Whipped fabric.

*411*

• Use this as a guide. If you prefer a looser fit, we recommend sizing up

*FABRIC*

• Wispy soft micro modal stretch fabric imported from Austria
• Shell is a rose-tinted cherry blossom blush pink tone
• Drop-needle stitch creates a subtle, vertical stripe effect
  
• 73% Micromodal, 17% Viscose, 10% Lycra
• 100% Cotton gusset lining
• Certified Safe: OEKO-TEX® STANDARD 100 #23.HCN.86212 by Hohenstein HTTI
  
• Machine wash warm, no bleach, tumble dry low, cool iron, wear often.

Sporty Chic. Boxer cut.
A high-rise, mid-thigh length boyshort-meets-bikeshort in the most deliciously soft fabric in the world.

*411*

• Use this as a guide. If you prefer a looser fit, we recommend sizing up
• High rise waist hits at the navel
• Front v princess seam details
• 3¾" inseam

*FABRIC*

• Wispy soft micro modal stretch fabric imported from Austria
• Shell is a rose-tinted cherry blossom blush pink tone
• Drop-needle stitch creates a subtle, vertical stripe effect
• 91% Micro Modal 9% Lycra
  
• 100% Cotton gusset lining
• Certified Safe: OEKO-TEX® STANDARD 100 #23.HCN.86212 by Hohenstein HTTI
  
• Machine wash warm, no bleach, tumble dry low, cool iron, wear often.

Next level soft. Our #1 non-wire cut.
So comfortable you can nap in it, so cute you’ll wanna tell all your friends about it. This is the perfect lounge bra.

*411*

• Use this as a guide. Preference is a huge factor — the benefit of a non-wire is they’re super flexible, so you will likely fit in more than one size
• Depending on how much coverage you like, size up or down accordingly

*FABRIC*

• Wispy soft micro modal stretch fabric imported from Austria
• Maritime is a nautical rich blue pinstripe on a cream-white base.
• Drop-needle stitch creates a subtle, vertical stripe effect
  
• Lined in the front for more opacity
• 73% Micromodal, 17% Polyester, 10% Lycra
• A small amount of polyester helps keep the stripe pattern sharp and prevents colors from running in the wash. Our solid Whipped fabric remains polyester-free.
• Certified Safe: OEKO-TEX® STANDARD 100 #23.HCN.86212 by Hohenstein HTTI
• Machine wash warm, no bleach, tumble dry low, cool iron, wear often
  

Impossibly soft. High leg.
Featuring a high thigh cut, cheeky bum, and faux fly grommet detail. This may be the pinnacle of cuteness.

*411*

• Use this as a guide. If you prefer a looser fit, we recommend sizing up

*FABRIC*

• Wispy soft micro modal stretch fabric imported from Austria
• Maritime is a nautical rich blue pinstripe on a cream-white base.
• Drop-needle stitch creates a subtle, vertical stripe effect
  
• 73% Micromodal, 17% Polyester, 10% Lycra
• 100% Cotton gusset lining
• A small amount of polyester helps keep the stripe pattern sharp and prevents colors from running in the wash. Our solid Whipped fabric remains polyester-free.
• Certified Safe: OEKO-TEX® STANDARD 100 #23.HCN.86212 by Hohenstein HTTI
  
• Machine wash warm, no bleach, tumble dry low, cool iron, wear often.

Sporty Chic. Boxer cut.
A high-rise, mid-thigh length boyshort-meets-bikeshort in the most deliciously soft fabric in the world.

*411*

• Use this as a guide. If you prefer a looser fit, we recommend sizing up
• High rise waist hits at the navel
• Front v princess seam details
• 3¾" inseam

*FABRIC*

• Wispy soft micro modal stretch fabric imported from Austria
• Maritime is a nautical rich blue pinstripe on a cream-white base
  
• Drop-needle stitch creates a subtle, vertical stripe effect
• 73% Micromodal, 17% Polyester, 10% Lycra
• 100% Cotton gusset lining
• A small amount of polyester helps keep the stripe pattern sharp and prevents colors from running in the wash. Our solid Whipped fabric remains polyester-free.
• Certified Safe: OEKO-TEX® STANDARD 100 #23.HCN.86212 by Hohenstein HTTI
  
• Machine wash warm, no bleach, tumble dry low, cool iron, wear often.