Heavy Period Kit

Introducing the Heavy Period Kit - 100% period-proof protection for those with a heavier cycle. Say goodbye to pads & tampons!


Your Heavy Period Kit includes:

  • 4 Black Super Leakproof Underwear 
    The most absorbent period underwear ever - absorb up to 8 tsp of blood (that’s 8 tampons!)
  • 1 Black Sleepover Short 
    Comfy and protective pajama shorts - absorb up to 4 tsp of blood
  • 1 Reusable Pouch
    To hold all your period necessities! 

Everything you need to have a completely waste-free cycle. Plus, save your sheets and catch more Zzz’s with the Sleepover Short designed specifically for overnight period protection.  

Ready to ditch the disposables for incredibly comfortable and machine-washable undies? Just choose your underwear size (XS-XXL) and style (Bikini or Boyshort) and leave the bulky pads and leaky tampons behind! 

KT by Knix Period Underwear FAQs

Period Proof Technology
Reviews
average rating 4.8 out of 5
Based on 5 reviews
  • 5 Stars
    4 Reviews
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    1 Review
  • 3 Stars
    0 Reviews
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    0 Reviews
100% of reviewers would recommend this product to a friend
5 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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