4.6
Rated 4.6 out of 5 stars
3,784 Reviews

Heavy Period Kit - Bikini

Each bikini absorbs about 1.5 regular pads' or 3 super tampons' worth of liquid
$142.20 USD
$158.00

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Amber has 38" hips and wears a Knix size M
Marlene has 50" hips and wears a Knix size XXL
Chloe has 47" hips and wears a size XL
Ottavia has 44" hips and wears a Knix size L
Washes just like regular underwear
Amber has 38" hips and wears a Knix size M

Super Leakproof® No-Show Bikini (2 Pack)

Color: Black

Size:
Amber has 38" hips and wears a Knix size M

Super Leakproof® No-Show Bikini (2 Pack)

Color: Black

Size:
Marlene has 50" hips and wears a Knix size XXL

Super Leakproof® Dream Short

Color: Black

Size:
Free Wash Bag

Free Wash Bag

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4.6
Rated 4.6 out of 5 stars
Based on 3,784 reviews
92%would recommend these products
3,784 reviews
  • Tiffany
    Verified Buyer
    Yesterday
    Rated 5 out of 5 stars
    I didn’t know I needed this in my life till I tried them on

    These are the best sleep shorts. Period.

  • Naomi
    Verified Buyer
    Yesterday
    Rated 5 out of 5 stars
    Incredible!

    Somehow it doesn’t feel like you’re wearing a maxi pad, and it’s pure comfort all day. Since finding out menstrual disks and cups don’t work for me anymore with a prolapse post childbirth, I was pretty upset to have to use pads. But this option has saved my life haha! Soooo much better than any other external period product on the market!

    ComfortRated 5.0 on a scale of 1 to 5
    EffectivenessRated 5.0 on a scale of 1 to 5
    SizingRated 0.0 on a scale of minus 2 to 2
  • Suezanna R.
    Verified Buyer
    2 days ago
    Rated 5 out of 5 stars
    Honestly the best thing

    I have a heavy flow but I picked up the mediums just to see how they did. Honestly I'm amazed. Not only did they hold up but they are comfy to wear. The flow didn't settle on the top and you could barely tell there was anything there. Zero leaks at night. This was by far the best purchase I have ever made

    ComfortRated 5.0 on a scale of 1 to 5
    EffectivenessRated 5.0 on a scale of 1 to 5
    SizingRated 0.0 on a scale of minus 2 to 2
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How to Wash - Text with Image Section - PDP Template Mobile

How to wash

Machine Washable: Wash with like colors, cold setting with mild detergent, do not bleach, iron, or dry clean.

Always refer to our Fabric & Care section for best drying practices.

Knix Founder, Joanna Griffiths explains Period Underwear

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Your leakproof questions, answered.