Heavy Period Kit

Our most protective kit yet features four pairs of black Super Leakproof Underwear and one black Super Sleepover Short, all in a reusable pouch. Both styles are made with our patented, 3-layer leakproof technology.

 

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

Second layer: A super thin, highly-absorbent liner that holds the power of 8–12 tampons or pads.

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

guaranteed confidence, no matter how heavy things get.
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Holds up to 8–12 tampons or pads worth of blood.
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Rapidly absorbs moisture to keep you fresh and dry all day.
Antimicrobial layer kills bacteria and neutralizes smells.
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Sleepover Short features a longer gusset to prevent leaks all night.

Our most protective kit yet features four pairs of black Super Leakproof Underwear and one black Super Sleepover Short, all in a reusable pouch. Both styles are made with our patented, 3-layer leakproof technology.

 

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

Second layer: A super thin, highly-absorbent liner that holds the power of 8–12 tampons or pads.

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

Super Leakproof Underwear

Body: 70% Nylon, 30% Spandex 

Gusset Top Layer (Moisture Wicking + Anti-Odor): 87% Seaweed Fiber, 13% Modal 

Gusset 2nd Layer (Absorbent Fabric): 100% Polyester 

Gusset 3rd Layer: Fresh Fix Technology 

Gusset 4th Layer (Waterproof Membrane): Polyurethane Film


Free from PFAS and other chemical treatments. 

Machine wash cold with mild detergent, do not bleach, tumble dry on low. 


Super Sleepover Short

Body: 70% Nylon, 30% LYCRA®

Gusset Top Layer: 84% Modal, 8% Seaweed Fiber, 8% Spandex

Gusset 2nd Layer: 100% Polyester

Gusset 3rd Layer: Leakproof Technology


Free from PFAS and other chemical treatments.

Machine wash cold with mild detergent, do not bleach, tumble dry on low.

We’ve extended our First Pair Risk-Free Policy* to give everyone a chance to try our new sizes. So even if it’s not your first order with Kt, you can return or exchange your period underwear until March 31, 2022. 

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. 

*Policy does not apply to sale or last call items.

We offer free shipping on all orders over $80.

We ship our items via DHL or Canada Post depending on your location. Please allow 1-2 business days for your items to be processed and shipped.

Canadian Orders: Please allow 2–4 business days for shipping to the GTA, 3–10 business days for urban areas, and 6–15 business days for remote locations.

NOTE: Orders placed on Friday after 1 PM will not be processed until the following Monday.

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Super Absorbency

Absorbs 9–12 tsp (45–60 ml) of blood—that’s about 9–12 regular tampons or pads! Perfect for overnight protection or your heaviest days when changing into a fresh pair might not be convenient.


High Absorbency

Absorbs 4–8 tsp (20–40 ml) of blood, or the equivalent of 4–8 tampons or pads. These are perfect for heavy flow days.


Medium Absorbency

Absorbs up to 3 tsp (15 ml), or about 3 tampons or pads worth of blood. Ideal for light to medium flow days or as backup to tampons or period cups.

All of our period underwear, swimwear, reusable pads, and activewear have our patented, 3-layer leakproof technology built right in.

First Layer: Moisture-wicking, antimicrobial technology wicks away sweat and moisture while neutralizing odors to keep you fresh all day long. 

Second Layer: A super thin, highly absorbent liner that holds the power of 3–20 tampons or pads.

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

The short answer: nope! Depending on the absorbency level of your period underwear and the heaviness of your flow, you can wear our period undies on their own or as a backup to pads, tampons, or menstrual cups. You can wear our High and Super absorbency underwear alone and be totally protected, while our Medium absorbency underwear can be worn alone on lighter days or as backup on heavier days.

Step 1: Give your 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 you find your perfect fit. Book a video call with them today.

We’ve extended our First Pair Risk-Free Policy* to give everyone a chance to try our new sizes. So even if it’s not your first order with Kt, you can return or exchange your period underwear until March 31, 2022.



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.



*Policy does not apply to sale or last call items.

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COMFORTABLE
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ABSORBENT
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JUST PLAIN BETTER
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REUSABLE
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COMFORTABLE
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ABSORBENT
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JUST PLAIN BETTER
Image of a chrome heart surrounding text
REUSABLE
Image of a chrome heart surrounding text
COMFORTABLE
Image of a chrome heart surrounding text
ABSORBENT
Image of a chrome heart surrounding text
JUST PLAIN BETTER
Image of a chrome heart surrounding text
REUSABLE
Image of a chrome heart surrounding text
COMFORTABLE
Image of a chrome heart surrounding text
ABSORBENT
Image of a chrome heart surrounding text
JUST PLAIN BETTER
Image of a chrome heart surrounding text
REUSABLE
Image of a chrome heart surrounding text
COMFORTABLE
Image of a chrome heart surrounding text
ABSORBENT
Image of a chrome heart surrounding text
JUST PLAIN BETTER
Image of a chrome heart surrounding text
REUSABLE
Image of a chrome heart surrounding text
COMFORTABLE
Image of a chrome heart surrounding text
ABSORBENT
Image of a chrome heart surrounding text
JUST PLAIN BETTER
Image of a chrome heart surrounding text
REUSABLE
Image of a chrome heart surrounding text
COMFORTABLE
Image of a chrome heart surrounding text
ABSORBENT
Image of a chrome heart surrounding text
JUST PLAIN BETTER
Image of a chrome heart surrounding text
REUSABLE
Image of a chrome heart surrounding text
COMFORTABLE
Image of a chrome heart surrounding text
ABSORBENT
Image of a chrome heart surrounding text
JUST PLAIN BETTER
Image of a chrome heart surrounding text
REUSABLE
Reviews
average rating 4.6 out of 5
Based on 7 reviews
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    4 Reviews
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100% of reviewers would recommend this product to a friend
Quality
Rated 4 out of 5
Comfort
Rated 5 out of 5
Sizing
Rated 1 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
7 Reviews
Reviewed by Jade
Verified Reviewer
I recommend this product
Rated 5 out of 5
Review posted

The Best Underwear for Heavy Periods

I purchased this kit because I have a HEAVY flow that just won't quit some days. It really works so well! I know all my friends thought it would feel like "sitting in a diaper" but boy are they wrong! The underwear stays dry and comfortable. The kit is such a good deal for the 4 underwear, shorts and pouch too that get me through my entire cycle. Worth it!

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Reviewed by Christine
Verified Reviewer
I recommend this product
Rated 5 out of 5
Review posted

Teen Approved

I bought this kit for my daughter who is absolutely in love! She used to go through 3-4 pads a day, but just wears one pair of these Super 'Oh-No' Proof underwear now! It's perfect for her since there's just enough underwear included to get her through the most heavy days of her cycle, plus the shorts for nighttime. Such a great product!

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Reviewed by Favour O.
Verified Reviewer
I recommend this product
Rated 4 out of 5
Review posted

Need to size down

I love the actual product! Into ally I was frustrated cause I measured myself and according to the size guide I was a medium but the medium set was loose and the underwear stretches out after even one use. The sleepover short fell off me they were so big!

The customer service is great though and I was able to get a set in a size small which fits great :)

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Reviewed by Victoria
Verified Reviewer
I recommend this product
Rated 5 out of 5
Review posted

Where has this been all my life?

Have a teen girl who is still shy about her period. This is so much easier for her than changing bulky pads all day. They are comfy and discreet. We got one pair to try and went back for the period kit. She loves her KT! Great for her and so much better for the environment too.

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Reviewed by Sandrine V.
I recommend this product
Rated 5 out of 5
Review posted

Excellent achat!

J’ai acheté cet ensemble pour ma fille, qui a ses règles depuis peu. Elle a un flux assez abondant, elle doit souvent changer ses serviettes sanitaires, et elle voyait ses règles comme quelque chose d’extrêmement désagréable. J’ai décidé de lui faire essayer les culottes menstruelles, et elle les adore! Celles-ci sont parfaites pour les règles plus abondantes. La journée la plus abondante de son cycle, elle change de culotte sur l’heure du dîner; mais pour les 6 autres jours, elle utilise la même culotte toute la journée. Elle n’a jamais eu de fuite. Elle adore aussi la paire de boxers de nuit, parce qu’elle avait toujours peur de tacher ses draps la nuit... mais maintenant cela ne l’inquiète plus. Je suis vraiment heureuse de lui avoir fait essayer ce kit. Nous allons certainement en acheter d’autres à l’avenir!

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