Leakproof Thong

Now available in 5 different nude shades! Our super-comfortable, machine-washable thong underwear is made with patented triple-layer leakproof technology that absorbs up to 1 tsp of liquid and protects you against all of life's leaks. For periods. For pee. For sweat. You name it, you're covered! 

Please note: All underwear are final sale.

Leakproof Essentials

We've harnessed cutting-edge textile technology to give you that extra confidence and comfort you deserve.
Patented Leakproof Tech
Super-absorbent, moisture-wicking, odor-killing, and quick-drying to keep you feeling fresh no matter what.
Conforms to Your Body
Adaptive 4-way stretch material that also relaxes with wash and wear for a perfect fit.
Makes Less Waste
Works great used on its own during light flow days or paired with tampons or menstrual cups during heavier periods.
average rating 4.7 out of 5
Based on 690 reviews
  • 5 Stars
    552 Reviews
  • 4 Stars
    108 Reviews
  • 3 Stars
    18 Reviews
  • 2 Stars
    8 Reviews
  • 1 Star
    4 Reviews
97% of reviewers would recommend this product to a friend
Rated 4 out of 5
Rated 4 out of 5
Rated 0 on a scale of minus 2 to 2, where minus 2 is Runs Small, 0 is True to Size and 2 is Runs Large
Customer photos and videos
690 Reviews
Reviewed by Carella G.
Verified Buyer
I don't recommend this product
Rated 1 out of 5
Review posted

Fits small, no stretch in sides and creates "muffin top" siluette

I am 5'1 and 110 lbs and ordered a size small thong. These underwear were way too small! There is very little stretch in the elastic that goes around hips/waist and even though I could get them on the siluette it made was terrible and uncomfortable.

I would say a more accurate description of the small is XXS.

I would love to see a design more like Hanky Panky with their leakproof liner.

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Reviewed by sheila p.
Verified Buyer
I recommend this product
Pant Size
Size Purchased
Light Bladder Leaks
Rated 5 out of 5
Review posted

Great over all-the small size could be a bit snugger

Loved the thongs. I am a size 2-4 usually so I ordered a size small. They’re a bit large but the small cheeky versions worked fine. Just an FYI for you tiny ladies! 😊 Hopefully KNIX will start making an XS soon.

Rated 4 out of 5
Rated 5 out of 5
Rated 1 on a scale of minus 2 to 2, where minus 2 is Runs Small, 0 is True to Size and 2 is Runs Large
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