Cotton Modal Super Leakproof Full-Gusset Underwear Bikini

Our most-requested style is finally here! Designed with our widest gusset ever, it has full-coverage protection that goes all the way up the front, and all the way up the back. Perfect for front sleepers, back sleepers, and everyone in between.

First layer: Moisture-wicking, odor-crushing technology wicks away sweat and moisture while neutralizing smells to keep you fresh all day long.

Second layer: A super thin, highly-absorbent liner that holds the power of 8 tampons or pads.

Third layer: A secure, liquid-resistant outer layer keeps leaks from happening.

Fourth layer: Acts like a waterproof membrane to prevent leaks on the outside.


Did you know? This product is eligible for reimbursement through your Flexible Spending Account (FSA). Learn More

you asked, we made it, our widest gusset ever.
Image of a chrome heart surrounding text
Image of a chrome heart surrounding text
FOR THIS GENERATION
Image of a chrome heart surrounding text
FOR THE PLANET
Image of a chrome heart surrounding text
FOR THIS GENERATION
Image of a chrome heart surrounding text
FOR THE PLANET
Image of a chrome heart surrounding text
FOR THIS GENERATION
Image of a chrome heart surrounding text
FOR THE PLANET
Image of a chrome heart surrounding text
FOR THIS GENERATION
Image of a chrome heart surrounding text
FOR THE PLANET
Image of a chrome heart surrounding text
FOR THIS GENERATION
Image of a chrome heart surrounding text
FOR THE PLANET
Image of a chrome heart surrounding text
FOR THIS GENERATION
Image of a chrome heart surrounding text
FOR THE PLANET
Image of a chrome heart surrounding text
FOR THIS GENERATION
Image of a chrome heart surrounding text
FOR THE PLANET
Image of a chrome heart surrounding text
FOR THIS GENERATION
Image of a chrome heart surrounding text
FOR THE PLANET
Image of a chrome heart surrounding text
FOR THIS GENERATION
Image of a chrome heart surrounding text
FOR THE PLANET
Image of a chrome heart surrounding text
FOR THIS GENERATION
Image of a chrome heart surrounding text
FOR THE PLANET
Image of a chrome heart surrounding text
FOR THIS GENERATION
Image of a chrome heart surrounding text
FOR THE PLANET
Image of a chrome heart surrounding text
FOR THIS GENERATION
Image of a chrome heart surrounding text
FOR THE PLANET
Image of a chrome heart surrounding text
FOR THIS GENERATION
Image of a chrome heart surrounding text
FOR THE PLANET
Image of a chrome heart surrounding text
FOR THIS GENERATION
Image of a chrome heart surrounding text
FOR THE PLANET
Image of a chrome heart surrounding text
FOR THIS GENERATION
Image of a chrome heart surrounding text
FOR THE PLANET
Image of a chrome heart surrounding text
FOR THIS GENERATION
nothing is tmi here—we promise.
Image of a chrome star surrounding text

Heavy Absorbency

Absorbs about the same as 3 super tampons. Perfect for overnight protection or your teens heaviest days when changing into a fresh pair might not be convenient.


Moderate Absorbency

Absorbs about 2.5 super tampons' worth of blood. Ideal for medium period days, discharge and sweat.


Light Absorbency

Absorbs about the same as about 1 regular tampon worth of blood, sweat or discharge. Ideal for lightest period days, spotting, sweat and discharge.

Each pair has a built-in liner that absorbs period blood. Kt Period Underwear is categorized by light, moderate and heavy flows so you can find the right pair for your teen’s needs.

All of our period underwear, swimwear, reusable pads, and activewear have our patented leakproof technology built right in. Liner’s are discreet and comfortable, and fit for your teen’s unique flow. 

That’s up to your teen or tween! Every flow and comfort level is different.

Depending on the absorbency level of the period underwear and the heaviness of your teen’s flow, they can wear our period undies on their own or as a backup to tampons or menstrual cups. 

We always recommend they choose an option that makes them feel most confident!

Step 1: Give your teens underwear a quick rinse under cold water.

Step 2: Throw it in the washing machine with your regular clothes. Wash on cold with mild detergent (no softener or bleach).

Step 3: There are two ways to dry them depending on the undies you have: lay flat to dry for medium absorbency products, or tumble dry on low for high to super absorbency products.

Step 4: That’s it! No ironing needed.

Check out our size chart here. If you want some help, we have virtual fitters ready on deck to help your teen find their perfect fit. Book a video call with them today.

Because they’re, well, underwear, we can’t accept exchanges or returns on used items. BUT your teen can try their first pair on your first order risk-free for 30 days!

If you ordered the wrong size of period underwear, we’ll send you a different pair at no cost or offer you a standard refund within 30 days of delivery (excluding original shipping fees).

If your order included multiple period underwear, open, wash, and wear one pair only. That way if you don’t love them, any unopened packages from the same purchase will be eligible for an exchange or standard refund (excluding original shipping fees).

All unopened packages will be donated to local organizations to support people in need.

Image of a chrome heart surrounding text
Sustainable
Image of a chrome heart surrounding text
Absorbent
Image of a chrome heart surrounding text
Comfortable
Image of a chrome heart surrounding text
Sustainable
Image of a chrome heart surrounding text
Absorbent
Image of a chrome heart surrounding text
Comfortable
Image of a chrome heart surrounding text
Sustainable
Image of a chrome heart surrounding text
Absorbent
Image of a chrome heart surrounding text
Comfortable
Image of a chrome heart surrounding text
Sustainable
Image of a chrome heart surrounding text
Absorbent
Image of a chrome heart surrounding text
Comfortable
Image of a chrome heart surrounding text
Sustainable
Image of a chrome heart surrounding text
Absorbent
Image of a chrome heart surrounding text
Comfortable
Image of a chrome heart surrounding text
Sustainable
Image of a chrome heart surrounding text
Absorbent
Image of a chrome heart surrounding text
Comfortable
Image of a chrome heart surrounding text
Sustainable
Image of a chrome heart surrounding text
Absorbent
Image of a chrome heart surrounding text
Comfortable
Image of a chrome heart surrounding text
Sustainable
Image of a chrome heart surrounding text
Absorbent
Image of a chrome heart surrounding text
Comfortable
Image of a chrome heart surrounding text
Sustainable
Image of a chrome heart surrounding text
Absorbent
Image of a chrome heart surrounding text
Comfortable
Image of a chrome heart surrounding text
Sustainable
Image of a chrome heart surrounding text
Absorbent
Image of a chrome heart surrounding text
Comfortable
Image of a chrome heart surrounding text
Sustainable
Image of a chrome heart surrounding text
Absorbent
Reviews
average rating 4.3 out of 5
Based on 8 reviews
  • 5 Stars
    4 Reviews
  • 4 Stars
    2 Reviews
  • 3 Stars
    2 Reviews
  • 2 Stars
    0 Reviews
  • 1 Star
    0 Reviews
75% of reviewers would recommend this product to a friend
Quality
Rated 4 out of 5
Comfort
Rated 4 out of 5
Sizing
Rated 0 on a scale of minus 2 to 2, where minus 2 is Fits Small, 0 is True to Size and 2 is Fits Large
Effectiveness
Rated 4 out of 5
Review posted
Reviewed by Kimberly G.
Verified Buyer
Pant Size
Kids 8-10
Size Purchased
XS
Usage
  • Back-up Protection
  • Period
  • Primary Protection
Rated 5 out of 5

Trustworthy coverage

I bought these for my 11 yr old granddaughter. She says they are comfy and she doesn’t have to worry about leaking when wearing them.

Loading...
I recommend this product
Quality
Rated 5 out of 5
Comfort
Rated 5 out of 5
Sizing
Rated 0 on a scale of minus 2 to 2, where minus 2 is Fits Small, 0 is True to Size and 2 is Fits Large
Effectiveness
Rated 5 out of 5
Was this helpful?
Review posted
Reviewed by Lisa F.
Verified Buyer
I'm a...
Teenager
I purchased for...
A Teenager/Tween
Pant Size
Kids 8-10
Size Purchased
XS
Usage
  • Other
Rated 5 out of 5

Great Cover

Such good coverage.

Less worry!

Loading...
I recommend this product
Quality
Rated 5 out of 5
Comfort
Rated 5 out of 5
Sizing
Rated 0 on a scale of minus 2 to 2, where minus 2 is Fits Small, 0 is True to Size and 2 is Fits Large
Effectiveness
Rated 5 out of 5
Was this helpful?
Review posted
Reviewed by Vanessa C.
Verified Buyer
I'm a...
Parental Figure
I purchased for...
A Teenager/Tween
Pant Size
Teen 4-10
Size Purchased
M
Usage
  • Primary Protection
Rated 5 out of 5

Great coverage!

No leaks with full coverage front and back!

Loading...
I recommend this product
Quality
Rated 5 out of 5
Comfort
Rated 5 out of 5
Sizing
Rated 0 on a scale of minus 2 to 2, where minus 2 is Fits Small, 0 is True to Size and 2 is Fits Large
Effectiveness
Rated 5 out of 5
Was this helpful?
Review posted
Reviewed by Jennifer H.
Verified Buyer
I'm a...
Parental Figure
I purchased for...
A Teenager/Tween
Pant Size
Teen 4-10
Size Purchased
S
Usage
  • Period
  • Primary Protection
Rated 5 out of 5

Bought for my daughter

She’s super happy with these. The extra absorption means she’s not waking up at night or worried at school.

Loading...
I recommend this product
Quality
Rated 5 out of 5
Comfort
Rated 5 out of 5
Sizing
Rated 0 on a scale of minus 2 to 2, where minus 2 is Fits Small, 0 is True to Size and 2 is Fits Large
Effectiveness
Rated 4 out of 5
Was this helpful?
Review posted
Reviewed by LaToya M.
Verified Buyer
I'm A...
Adult
I purchased for...
Myself
Pant Size
Teen 18-20
Size Purchased
XL
Usage
  • Back-up Protection
Rated 4 out of 5

Full gusset gal

I really enjoyed my experience with this undergarment. As a full figured gal I was always concerned about leaking during menses. These cover your areas completely minimizing your risk of leaks.

Loading...
I recommend this product
Quality
Rated 5 out of 5
Comfort
Rated 5 out of 5
Sizing
Rated 0 on a scale of minus 2 to 2, where minus 2 is Fits Small, 0 is True to Size and 2 is Fits Large
Effectiveness
Rated 4 out of 5
Was this helpful?