Name: Leakproof Thong
Brand: proof.
SKU: PFTG1001SND:XS
Price: 25.0 USD
Availability: InStock

Holds

up to 1 Tampon or 2 Tsps

AbsorbencyHolds up to 1 Regular Tampon or 2 Teaspoons

Color Sand

Black

Sand

QTY

Build a Bundle and Save 25%!

WEAR IT WITH

Stay Dry Comfort Bra

Finally, a bra made for boob sweat!

SHOP NOW

[{"id":15765093384301,"title":"Black \/ XS","option1":"Black","option2":"XS","option3":null,"sku":"PFTG1001BLK:XS","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Leakproof Thong - Black \/ XS","public_title":"Black \/ XS","options":["Black","XS"],"price":2500,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"","requires_selling_plan":false,"selling_plan_allocations":[]},{"id":15765093417069,"title":"Black \/ S","option1":"Black","option2":"S","option3":null,"sku":"PFTG1001BLK:S","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Leakproof Thong - Black \/ S","public_title":"Black \/ S","options":["Black","S"],"price":2500,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"","requires_selling_plan":false,"selling_plan_allocations":[]},{"id":15765093449837,"title":"Black \/ M","option1":"Black","option2":"M","option3":null,"sku":"PFTG1001BLK:M","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Leakproof Thong - Black \/ M","public_title":"Black \/ M","options":["Black","M"],"price":2500,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"","requires_selling_plan":false,"selling_plan_allocations":[]},{"id":15765093482605,"title":"Black \/ L","option1":"Black","option2":"L","option3":null,"sku":"PFTG1001BLK:L","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Leakproof Thong - Black \/ L","public_title":"Black \/ L","options":["Black","L"],"price":2500,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"","requires_selling_plan":false,"selling_plan_allocations":[]},{"id":15765093515373,"title":"Black \/ XL","option1":"Black","option2":"XL","option3":null,"sku":"PFTG1001BLK:XL","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Leakproof Thong - Black \/ XL","public_title":"Black \/ XL","options":["Black","XL"],"price":2500,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"","requires_selling_plan":false,"selling_plan_allocations":[]},{"id":15765093548141,"title":"Sand \/ XS","option1":"Sand","option2":"XS","option3":null,"sku":"PFTG1001SND:XS","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Leakproof Thong - Sand \/ XS","public_title":"Sand \/ XS","options":["Sand","XS"],"price":2500,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"","requires_selling_plan":false,"selling_plan_allocations":[]},{"id":15765093580909,"title":"Sand \/ S","option1":"Sand","option2":"S","option3":null,"sku":"PFTG1001SND:S","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Leakproof Thong - Sand \/ S","public_title":"Sand \/ S","options":["Sand","S"],"price":2500,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"","requires_selling_plan":false,"selling_plan_allocations":[]},{"id":15765093646445,"title":"Sand \/ M","option1":"Sand","option2":"M","option3":null,"sku":"PFTG1001SND:M","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Leakproof Thong - Sand \/ M","public_title":"Sand \/ M","options":["Sand","M"],"price":2500,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"","requires_selling_plan":false,"selling_plan_allocations":[]},{"id":15765093679213,"title":"Sand \/ L","option1":"Sand","option2":"L","option3":null,"sku":"PFTG1001SND:L","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Leakproof Thong - Sand \/ L","public_title":"Sand \/ L","options":["Sand","L"],"price":2500,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"","requires_selling_plan":false,"selling_plan_allocations":[]},{"id":15765093711981,"title":"Sand \/ XL","option1":"Sand","option2":"XL","option3":null,"sku":"PFTG1001SND:XL","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Leakproof Thong - Sand \/ XL","public_title":"Sand \/ XL","options":["Sand","XL"],"price":2500,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"","requires_selling_plan":false,"selling_plan_allocations":[]},{"id":32819005194349,"title":"Sand \/ 2XL","option1":"Sand","option2":"2XL","option3":null,"sku":"PFTG1001SND:2XL","requires_shipping":true,"taxable":true,"featured_image":null,"available":false,"name":"Leakproof Thong - Sand \/ 2XL","public_title":"Sand \/ 2XL","options":["Sand","2XL"],"price":2500,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"","requires_selling_plan":false,"selling_plan_allocations":[]},{"id":32819005685869,"title":"Sand \/ 3XL","option1":"Sand","option2":"3XL","option3":null,"sku":"PFTG1001SND:3XL","requires_shipping":true,"taxable":true,"featured_image":null,"available":false,"name":"Leakproof Thong - Sand \/ 3XL","public_title":"Sand \/ 3XL","options":["Sand","3XL"],"price":2500,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"","requires_selling_plan":false,"selling_plan_allocations":[]},{"id":32819006570605,"title":"Black \/ 2XL","option1":"Black","option2":"2XL","option3":null,"sku":"PFTG1001BLK:2XL","requires_shipping":true,"taxable":true,"featured_image":null,"available":false,"name":"Leakproof Thong - Black \/ 2XL","public_title":"Black \/ 2XL","options":["Black","2XL"],"price":2500,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"","requires_selling_plan":false,"selling_plan_allocations":[]},{"id":32819007127661,"title":"Black \/ 3XL","option1":"Black","option2":"3XL","option3":null,"sku":"PFTG1001BLK:3XL","requires_shipping":true,"taxable":true,"featured_image":null,"available":false,"name":"Leakproof Thong - Black \/ 3XL","public_title":"Black \/ 3XL","options":["Black","3XL"],"price":2500,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"","requires_selling_plan":false,"selling_plan_allocations":[]}]

Unseen but powerful, our thong underwear works for your period and leaks…Hooray!

Our breathable, buttery soft microfiber in a low-rise silhouette lets you eliminate panty lines while having a backup for your leaks. Minimal coverage that still includes our multi-layer Leak-Loc™ system.

Regular Lining

The Thong features an invisible leakproof core in the gusset. You’ll be comfortable and protected with our soft and slim multi-layer core.

Great for

light periods

spotting

replace a panty liner

back up a tampon

discharge

sweat

odor reduction

Outer: 75% Nylon 25% Spandex

Lining: 100% Polyester

Lining: 69% Cotton 25% Polyester 6% Acrylate

Protection

Regular Lining

The Thong features an invisible leakproof core in the gusset. You’ll be comfortable and protected with our soft and slim multi-layer core.

FAQs

See all FAQs

The Thong is equipped with Leak-Loc™ technology and light absorbency that holds up to 1 regular tampon or 2 tsp. That makes it perfect for light bladder leaks or periods, spotting, discharge, or sweat. The unique moisture-wicking lining and antimicrobial fibers wick moisture away from the body and inhibits the growth of bacteria while fighting odor.

Our leakproof, period-proof thong was designed with comfort in mind. Created with buttery-soft, stretch fabric that moves with the body and a thin, flexible gusset keeps you comfortable, day or night.

We typically advise buying your normal underwear size for the thong. For a more generous, high-rise fit, you may like a size up. For more size guidance, check out our size guide.

Oh yes! The Thong is great for everyday wear, as it provides light ‘back up’ protection for all of those in-between days. Smooth, seamless edges vanish under clothing to provide a sleek look under clothing.

The leakproof thong undie was designed with light periods in mind. If you have a low flow, the thong will pull moisture away from the body and into the Leak-Loc™ core which holds up to 1 regular tampon or 2 tsp.

Don't just take it from us, hear why real women love Proof...

How Proof Is Made

Proof’s patented Leak-Loc™ technology protects against all of life’s leaks, both big and small. Our undies hold up to 10 teaspoons (that’s 5 full tampons worth!) of liquid. We craft our pairs with rigorously-tested materials, to ensure the highest quality care *down there*.

Explore Our Technology

This is really (really) leakproof underwear

Build A Bundle That's Perfect For You

Save up to 20%

Build Your Own Bundle

Very comfortable! And do the job

I love the material, they are very comfortable and do the job! I have HSV-2. So my area is very sensitive to liners, it doesn’t appreciate the friction and irritation they can cause. When excessive irritation occurs that’s when I will get an outbreak, unfortunately. I finally decided to invest in these underwear and see what they were all about! I am so happy I did:) they do the job very well and are not super thick and are comfortable for all day wear. I wore them to work for 13hrs (I’m a nurse) and they were great. I gave them a 4 star because I wish there were different options like high rise option. I don’t like low or mid rise underwear for leggings or jeans because you can see the indentation of the underwear.

Perfect!

I am big on a major brand’s no show undies and this one is equally as good. I use a menstrual cup during my time of the month and this provide extra security just in case. I have no problem wearing these under leggings while working out. I wish there were more colors but overall I love!

Write a Review

average rating 5.0 out of 5

Based on 27 reviews

5 Stars

26 Reviews
4 Stars

1 Review
3 Stars

0 Reviews
2 Stars

0 Reviews
1 Star

0 Reviews

78% of reviewers would recommend this product to a friend

27 Reviews

Reviewed by Andrea

Verified Buyer

I recommend this product

Rated 5 out of 5

Review posted

Just what I needed

Not too bulky, works fine for gym/regular underwear and as a backup.

Was this helpful?

Reviewed by Natalie F.

OBSESSED

i have been using the brand THINX for years but they were not holding up. these are far superior, the fabric is way better and are holding up so well in the wash!

Reviewed by Aubrei V.

5 star underwear

Really comfortable underwear! I would recommend getting a pair of these, no leeks or anything!

Reviewed by Claudia M.

Comfortable

They are very comfortable and they don’t leak these are my fav

Reviewed by Danielle

Rated 4 out of 5

Reviewed by Christina

Great for any time of the month!

I've purchased 3 within the past year because I love them so much. They fit perfectly, super comfortable and no panty lines!

Reviewed by Jen N.

lifesaver!

Why didn't I know about these before? Really great for those last few days of my period. I got through a rigorous workout (and the rest of my day!) with no issues. Will be ordering another pair.

Reviewed by Amelia P.

Reviewed by Monee

Verified Reviewer

Super comfortable and effective!

I love these so much. I’m all about sustainability and these allow me to be waste free all while being 1) comfortable 2) worry free 3)and feeling sexy without an uncomfortable panty liner

Reviewed by susie s.

Love these!

Big Fan. These are a life changer. I love them and leave me worry free.

Leakproof Thong