Free US shipping + extended holiday returns

MK, shown here, is a size 26 jeans, wearing a size 1
Subtle v-back feels like you're not wearing anything
Uber soft elastic band never rolls and won't dig
Sieve Thong in Black

Sieve Thong in Black

A little bit sheer. A little bit sultry. 100% comfortable. You can do better than basic black.
  • Subtly sheer Belgian honeycomb micromesh
  • Silky plush elastic waist band
  • Low rise cut lays smooth on hips
  • Invisible under most (dark) clothes
    • 0 = XS (jeans size: 24, 25, 26)
    • 1 = S (jeans size 26, 27, 28)
    • 2 = M (jeans size 28, 29, 30)
    • 3 = L (jeans size 30, 31, 32)
    • 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
Orders over $100 ship for free
All unworn items, with tags attached and in their original packaging are eligible for return or direct exchange within 21 days of placing your order.

Want to know our full returns policies? Here you go.

Want more info about shipping, materials or care instructions? Here!

Anything else? Email us at hello@negativeunderwear.com

    $28.00
    A little bit sheer. A little bit sultry. 100% comfortable. You can do better than basic black.
    • Subtly sheer Belgian honeycomb micromesh
    • Silky plush elastic waist band
    • Low rise cut lays smooth on hips
    • Invisible under most (dark) clothes
      • 0 = XS (jeans size: 24, 25, 26)
      • 1 = S (jeans size 26, 27, 28)
      • 2 = M (jeans size 28, 29, 30)
      • 3 = L (jeans size 30, 31, 32)
      • 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
    Orders over $100 ship for free
    All unworn items, with tags attached and in their original packaging are eligible for return or direct exchange within 21 days of placing your order.

    Want to know our full returns policies? Here you go.

    Want more info about shipping, materials or care instructions? Here!

    Anything else? Email us at hello@negativeunderwear.com

      “Negative Underwear was founded with three words in mind: minimal, considered, and uncomplicated. That's exactly what its bras are. “

      “Negative Underwear’s classic seamed bra is comfortable and simple but still sexy enough to wear on your next date.”

      “The result is four simple styles produced with premium-­quality cotton and nylon elastane sourced from Belgium and the U.S.”