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☆NEW☆ Lace Back Bikini - proof
☆NEW☆ Lace Back Bikini - proof
☆NEW☆ Lace Back Bikini - proof
☆NEW☆ Lace Back Bikini - proof
☆NEW☆ Lace Back Bikini - proof
☆NEW☆ Lace Back Bikini - proof
☆NEW☆ Lace Back Bikini - proof
☆NEW☆ Lace Back Bikini - proof

☆NEW☆ Lace Back Bikini - proof

Regular price
5,170 円
Regular price
5,170 円
Sale price

5,170 円

Unit price
Sold out
(Tax included.)
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Brand: proof

A low-rise silhouette panty with lace detailing and powerful leak protection up to 30ml.
The Lace Back Bikini is designed to help you feel dry and comfortable all day.


We recommend that you buy Proof underwear in one size smaller than your usual Japanese size.
If you wish for a size L (XL in typical Japanese underwear size), we will take individual orders. Please contact us at or LINE (account ID: @352ejdxc).


Great for…

  • moderate days
  • when there are light bladder leaks
  • when you want to use together with a tampon, pad, or cup
  • when you are worried about sweat
  • when you are worried about smell (odor reduction)


  • Holds up to 6 teaspoons (30ml)
  • Color: Black 
  • The transparent bag that proof comes in is made of degradable material that returns to soil.

<About the crotch (absorbent part) >

  • The upper layer is made of antibacterial, moisture absorbing material that helps prevent the growth of odor-causing bacteria*.
  • The edge part of the gusset features US patented LEAK-LOC™ technology that helps prevent leakage from the seams.
  • The thin and flexible leakproof technology hugs the body from the front waistband to the back for total peace of mind.

*According to SGS:Assessment of Antibacterial Finishes on Textile Material (AATCC 100-2012) 




  • Body Fabric: 75% nylon 25% spandex
  • Lace: 87% nylon 13% spandex
  • Gusset Linings:
  • Outer: 100% polyester
  • Middle: 70% polyester 30% cotton
  • Inner: 100% polyester


  • Machine wash in a delicate cycle, using gentle detergents. Can also be hand washed.
  • To help sanitize, use a few drops of tea tree oil or vinegar in the rinse cycle of your washing machine.
  • Do not use hot water, harsh detergents, softeners, or bleach when washing or rinsing your Proof. Cold water helps to extend the longevity and effectiveness of the underwear.
  • After washing your Proof undies, hang or lay flat to dry. Proof’s multi-layered technology can take between 6-24 hours to dry. To dry more quickly, blot any excess moisture and hang dry. Air drying in the shade will help maintain the color of Proof underwear.


  • If the traces of the hygiene sticker remain on the gusset, rub gently in lukewarm water.
  • ※If the "No Box" size is selected, the underwear will be packaged in a transparent bag, without the paper box.