Leakproof Thong

This comfortable, machine-washable thong underwear features patented leakproof technology that absorbs up to 1 tsp of liquid – perfect as backup protection during your cycle’s heavier days, on its own for lighter ones, or for helping you deal with light bladder leaks.

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.

Knix Leakproof Period Underwear FAQs

Super Leakproof Technology
average rating 4.7 out of 5
Based on 811 reviews
  • 5 Stars
    646 Reviews
  • 4 Stars
    124 Reviews
  • 3 Stars
    26 Reviews
  • 2 Stars
    9 Reviews
  • 1 Star
    6 Reviews
96% of reviewers would recommend this product to a friend
Comfort
Rated 4 out of 5
Effectiveness
Rated 4 out of 5
Sizing
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
811 Reviews
Reviewed by Carella G.
Verified Buyer
Leakproof Thong
Reviewing
Leakproof Thong
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.

Loading...
Was this helpful?
Reviewed by sheila p.
Verified Buyer
Leakproof Thong
Reviewing
Leakproof Thong
I recommend this product
Pant Size
2
Size Purchased
S
Usage
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.

Loading...
Comfort
Rated 4 out of 5
Effectiveness
Rated 5 out of 5
Sizing
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
Was this helpful?