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Free shipping over $100. Free returns shipping, always.

Can't beat this shade of pale peachy pink
Sieve Thong in Peach
Silky elastic waist band makes this thong invisible under clothes
Naomi, shown here, is a size 26 jeans, wearing a size 1 (S)

Sieve Thong in Peach

The cure for a common case of beige malaise - this thong goes under everything, but is not at all lame.
  • Subtly sheer Belgian honeycomb micromesh
  • Silky plush Japanese elastic waist band
  • Low rise cut lays smooth on hips
  • Invisible under most (light and dark) clothes
    • Naomi is 5'9", size 26 jeans, and wearing size 1
    • 0 = XS/S (jeans size: 24, 25, 26)
    • 1 = S/M (jeans size 26, 27, 28)
    • 2 = M/L (jeans size 28, 29, 30)
    • Fit is low rise
    • If you prefer a looser fit or higher rise you may consider sizing up

  • Questions? Talk to us: hello@negativeunderwear.com
Free domestic shipping on orders over $100; free domestic returns, always. 
Underwear bottoms must be unworn, with tags attached, to be eligible for merchandise credit. While we can’t offer refunds for underwear bottoms, we’re confident you’ll put your merchandise credit to good use! They never expire, and can be used for anything on our site.

Want more info about materials, care instructions or policies? FAQ's or hello@negativeunderwear.com.
$28.00
The cure for a common case of beige malaise - this thong goes under everything, but is not at all lame.
  • Subtly sheer Belgian honeycomb micromesh
  • Silky plush Japanese elastic waist band
  • Low rise cut lays smooth on hips
  • Invisible under most (light and dark) clothes
    • Naomi is 5'9", size 26 jeans, and wearing size 1
    • 0 = XS/S (jeans size: 24, 25, 26)
    • 1 = S/M (jeans size 26, 27, 28)
    • 2 = M/L (jeans size 28, 29, 30)
    • Fit is low rise
    • If you prefer a looser fit or higher rise you may consider sizing up

  • Questions? Talk to us: hello@negativeunderwear.com
Free domestic shipping on orders over $100; free domestic returns, always. 
Underwear bottoms must be unworn, with tags attached, to be eligible for merchandise credit. While we can’t offer refunds for underwear bottoms, we’re confident you’ll put your merchandise credit to good use! They never expire, and can be used for anything on our site.

Want more info about materials, care instructions or policies? FAQ's or hello@negativeunderwear.com.

Pair it with ->

Waist line detailing creates a natural, flattering curve Waist line detailing creates a natural, flattering curve
Essaouira Bodysuit in Peach $200
Balconette bra shown here on Naomi, size 34D Balconette bra shown here on Naomi, size 34D
Sieve Balconette Bra in Peach $85
The Sieve Demi is cut with slightly more coverage on the cup The Sieve Demi is cut with slightly more coverage on the cup
Sieve Demi Bra in Peach $70
Sieve Non-Wire Bra in Peach Sieve Non-Wire Bra in Peach
Sieve Non-Wire Bra in Peach $55

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Size Guide

What size am I in Negative?

If you already wear a certain bra size most often, you'll probably be the same in Negative - or at least that's the best place to start.

Need More Help?

If you've got specific questions, our awesome customer service team would love to help. No question is too small or TMI (trust us, we've heard it all) - hit us up: hello@negativeunderwear.com

How do I find out what size I am in Bras?

If you don't like the fit of your current bras, pull out a tape measure and let's figure out what size you are in 4 easy steps

Step 1: Bra and Tape

Wear your best-fitting, unpadded, underwire bra and nothing else. Grab a soft tape measure that is in inches.

Step 2: Band Measurement

Wrap a tape measure around your ribcage, following the base of your bra band - pull taut so there's no dip in the tape, but not so tight that you create an indent. This number, in inches, is your band measurement. If the number is odd, round up to the nearest even.

Step 3: Bust Measurement

Move the tape around the fullest part of your bust, typically at the center of your nips, wrap evenly around your back, holding taut without any dipping. Take this measurement in inches, this is your bust measurement.

Step 4: Bra Size

Take your bust measurement (second one) and subtract your band measurement (first one). Each inch difference between your band and bust measurements equals one cup size. The band measurement and cup size combined are your underwire bra size.

An Example