Leakproof Bikini

This comfortable, machine-washable bikini underwear features patented leakproof technology that absorbs up to 3 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 4.6 out of 5
Based on 2148 reviews
  • 5 Stars
    1635 Reviews
  • 4 Stars
    341 Reviews
  • 3 Stars
    108 Reviews
  • 2 Stars
    41 Reviews
  • 1 Star
    23 Reviews
93% 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
2148 Reviews
Reviewed by Sara
Verified Buyer
I don't recommend this product
Pant Size
16
Size Purchased
XXL
Usage
Period Back-Up
Rated 2 out of 5
Review posted

Not enough front to back coverage

The coverage in the front is pretty good on the cheeky style but is further down on the bikini and I have leaked just above the lining several times. I’m better off with a liner or pad so I can place protection where I need it.

Loading...
Comfort
Rated 5 out of 5
Effectiveness
Rated 2 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
Was this helpful?
Reviewed by Mollie Z.
Verified Buyer
I recommend this product
Pant Size
12
Size Purchased
Large
Use
  • Period - Backup Protection
Rated 5 out of 5
Review posted

Athletic Leakproof Bikini

So comfortable that I can wear them everyday. The padding isn't too much they still feel like regular panties with the added protection.

Loading...
Comfort
Rated 5 out of 5
Absorbency
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
Was this helpful?