Regular price Sale price $43 USD
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Regular price Sale price $43 USD

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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. Proof offers 3 types of bikini underwear that can all keep you leak-free and confident.

What type of leaks are the leakproof lace bikini panties best for?

Let’s face it - leaks happen. So why not be protected? With Proof’s Lace Back Bikini Underwear you can take on everyday life and never get the fear of leaks getting in the way. Proof’s Lace Back Leak Proof Bikini Underwear is best for:

  • Moderate periods
  • Light bladder leaks
  • Pad replacement
  • Back up for a tampon or cup
  • Sweat
  • Odor reduction

Will these lace period bikini undies provide protection against odors?

Yes, our Leak Proof® Lace Back Bikini Undies feature odor reduction technology. We use technical fibers to help reduce odor. Just another way you can boost your confidence with Proof.

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, take a second to enjoy the view, and locate the fullest part of your booty. 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 lace back bikini undies moisture wicking?

Yes! Proof Lace Back Bikini undies are made with several layers of moisture-wicking, absorbent material. They are designed to extract moisture from the body and into the extra absorbent core of the undies.

Do I need to wear a tampon or pad with these lace back undies?

Free yourself of uncomfortable tampons and crinkly pads with Proof’s Lace Back undies. You can use Proof’s Lace Back undies as a replacement or back up for tampons, pads, or a cup. They are best for moderate periods so if your flow is heavy, you should try our classic leakproof undies.

How comfortable are the lace back leakproof bikini undies?

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