Regular price Sale price $43 USD

Buy 4+ and save 20%

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Regular price Sale price $43 USD

Buy 4+ and save 20%

moderate Absorbency holds up to 3 regular tampons

Color Black
HSA/FSA Approved

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Not your average period undie, The Leakproof Lace Back Bikini Period Underwear is designed with lace detailing on the sides and back for a feminine, fashion touch. A soon-to-be top drawer staple for your period regimen, this mid-rise style offers three things we know you love: comfort, style, and protection. Crafted with our patented Leak-Loc® absorbent core technology that helps you feel confident for those moderate flow days.


Absorbs moderate periods, sweat, and discharge

Features a feminine, lace design along the back and sides in a low-rise fit with minimal coverage

Can be used as a pad, tampon, or cup alternative

Washer friendly, hang to dry


Outer: 75% Nylon 25% Spandex 
Top Lining: 100% Polyester 
Inner Lining: 70% Polyester 30% Cotton
Bottom Lining: 100% Polyester
Lace:87% Nylon 13% Spandex

Care Instructions:
Reusable & machine washable: When you're done wearing, simply wash with cold water and gentle detergent, then hang or lay flat to dry


Absorbent Zone; Regular
Center lining protection with absorbent multi-layer core
Leak-Loc® bonded edge technology

  • moisture-wicking top layer
  • absorbent core
  • waterproof liner
  • water-resistant outer fabric
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What are bikini style underwear?

Proof’s bikini underwear offers comfort and invisible protection. With three different styles to choose from, you can find the pair that’s just right for you. Bikini underwear typically has a lower rise on the hip, minimal coverage in the front, and a higher cut on the legs. All the while, they still offer plenty of coverage on the backside. Bikini underwear is one of the most popular styles for women, as it goes with just about any everyday outfit thanks to its flattering cut.

What type of leaks is the Leakproof Lace Bikini panties best for?

Let’s face it - leaks happen. So why not be protected? With the Laceback Bikini Underwear, you can take on everyday life with a little more peace of mind. Our Laceback Bikini Underwear is best for moderate periods, sweat, and discharge.

How do I know which size to choose?

First, measure your hips and waist. To measure your hips, lean over to one side. Find where your body naturally creases and place the tape there. You will measure parallel to the ground. To measure your hips, turn to the side, locate the fullest part of your backside. Again measure parallel to the floor while placing the tape around the fullest part of your hips and tush. Once you have your measurements, you can use Proof’s size chart to determine the appropriate size.


Falling in between sizes? Go with the size that matches your hip measurement for the most accuracy.

Are these Laceback Bikini undies moisture wicking?

Yes! Proof Laceback Bikini undies are made with absorbent material to help wick moisture away from the body and into the core of the undies.

How comfortable are the Laceback Leakproof Bikini undies?

The proof is in our reviews. Our Laceback Leakproof Bikini undie reviews highlight that they are “surprisingly comfortable,” “comfy and cute,” “highly absorbent,” and more. Find out for yourself just how comfortable and confident our Lackback Leakproof undies can make you feel.

Do I need to wear a pad or tampon while wearing these leakproof undies?

It’s up to you! Some women choose to wear the Proof Laceback Bikini with a tampon, pad, or cup as back up, or you can wear the undie solo on moderate days. The Laceback Bikini absorbs up to 3 regular tampons worth of flow to help you feel confident.