Leakproof Lace Back Bikini
Rated 4.9 out of 5
Based on 15 reviews

Leakproof Lace Back Bikini

$43 Sale price
A little extra beauty for your booty
HSA/FSA Approved

AbsorbencyHolds up to 3 Regular Tampons or 6 Teaspoons


The Lace Back Bikini is designed with a slim leakproof core and Leak-Loc® edges to help you feel dry, while lace detailing disguises powerful leak protection. Proof® undies are more sustainable than single-use period products; just wear and wash, not use and toss.

Extended Lining

The Lace Back Bikini offers a slim, flexible leakproof core along the center of the undie. The extended lining offers enhanced leak protection.

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moderate periods

light bladder leaks

replace a pad

replace / back up a tampon


odor fighting

Outer: 75% Nylon 25% Spandex, Lace: 87% Nylon 13% Spandex

Lining: 100% Polyester

Lining: 68% Polyester 28% Cotton 4% Acrylate. Imported.

Caring for your pair is easy. Machine wash cold with mild detergents on a delicate cycle, then hang or lay flat to dry.

Extended Lining

The Lace Back Bikini offers a slim, flexible leakproof core along the center of the undie. The extended lining offers enhanced leak protection.


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.

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

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.

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.

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.

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.

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.