(Kit Item) Blue Crush Period Kit Butterfly | Super Sleepover Short

High protection. Zero worries. Meet the most absorbent undies ever. Revamped with a longer gusset and patented super leakproof technology, the new Super Sleepover Short is designed to fight period stains and leaks while you snooze–no bulky pads or tampons required. Made with moisture-wicking, odor-crushing, antimicrobial fabric, the Super Sleepover short absorbs up to 12 tsp of blood. Also amazing: the short is so comfortable to wear. Yes, you can have it all.

High protection. Zero worries. Meet the most absorbent undies ever. Revamped with a longer gusset and patented super leakproof technology, the new Super Sleepover Short is designed to fight period stains and leaks while you snooze–no bulky pads or tampons required. Made with moisture-wicking, odor-crushing, antimicrobial fabric, the Super Sleepover short absorbs up to 12 tsp of blood. Also amazing: the short is so comfortable to wear. Yes, you can have it all.

We ship our items via DHL or Canada Post depending on your location. Please allow up to 10 business days for your items to be processed and shipped.

US Orders: Please allow 3–10 business days for orders to arrive. 

International Orders: Please allow 10–25 business days for orders to arrive.  


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

CANADIAN CUSTOMERS: Shop www.knixteen.ca to order in Canadian currency.

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FOR THIS GENERATION
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for the planet!
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FOR THIS GENERATION
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for the planet!
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FOR THIS GENERATION
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for the planet!
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FOR THIS GENERATION
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for the planet!
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FOR THIS GENERATION
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for the planet!
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FOR THIS GENERATION
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for the planet!
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FOR THIS GENERATION
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for the planet!
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FOR THIS GENERATION
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for the planet!
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FOR THIS GENERATION
Image of a chrome heart surrounding text
for the planet!
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FOR THIS GENERATION
Image of a chrome heart surrounding text
for the planet!
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FOR THIS GENERATION
Image of a chrome heart surrounding text
for the planet!
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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!
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FOR THIS GENERATION
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for the planet!
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FOR THIS GENERATION
nothing is tmi here—we promise.
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Super Absorbency

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

High Absorbency

Absorbs up to 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

These absorb approximately 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, swim, 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 3-12 tampons or pads.

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

The short answer: nope! Depending on the level of absorbency of leakproof period underwear you choose and the heaviness of your flow, you can wear our period undies on their own or as backup protection along with a pad or tampon. You're totally protected with our high and super absorbency leakproof underwear, while our low and medium absorbency leakproof underwear can replace pads and tampons on lighter days and work great as a backup to whatever youre already using on heavier days.

Do a quick rinse before you throw your underwear in the machine. Wash on cold with mild detergent then tumble dry on low. That's it! Be sure not to use softener or bleach and never iron... Not that you would.

If you’re not sure which size underwear to get, just book a Virtual Fitting and someone from the Knix team will video chat you to walk you through everything!

Because they're, well, underwear we can't accept exchanges or returns on used items but you can try your first-pair on your first order, risk-free!

How it works:

if your first order includes multiple period underwear: open, wash & wear one pair only to test them out. That way, in the unlikely event that you dont love them, any unopened packages from the same purchase can be exchanged or refunded back to you within 30 days of delivery (excluding original shipping fees).

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

*All sale items are final sale.

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Sustainable
Image of a chrome heart surrounding text
Absorbent
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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
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