Super Leakproof® Sleepover Short - Clearance

meet the most absorbent nighttime period underwear ever.
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Holds up to 12 tampons or pads worth of blood.
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Rapidly absorbs moisture to keep you fresh and dry all day.
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Designed with a longer gusset to prevent leaks all night long.

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™


Machine wash cold with mild detergent. Do not bleach. Lay flat to dry.

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 for 30 days! Learn more about our First Pair Risk-Free Policy.


For sale items with a 25% or more discount, you may exchange for another item or store credit.

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.

Nothing is TMI here—we promise.
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Last Call Sale items are exchange only meaning you may exchange for another item or store credit. No refunds can be accommodated.All sale items are not eligible for our First Pair Risk-Free Policy.

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.


Medium Absorbency

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


Lightest 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.

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 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.

Reviews
average rating 5.0 out of 5
Based on 2 reviews
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100% of reviewers would recommend this product to a friend
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Review posted
Reviewed by Seleena D.
Verified Buyer
I'm a...
Teenager
I purchased for...
Myself
Pant Size
Teen 00-2
Size Purchased
S
Usage
  • Period
  • Sweat
  • Back-up Protection
Rated 5 out of 5

Best period underwear ever:))

MOST AMAZING PERIOD UNDERWEAR EVER! I have a very heavy flow and these last me the whole night, don’t have to worry about any leaks or staining the sheets! As a teen I feel self conscious of having to check if I leaked or worrying about a pad sliding especially at nights… but these hold everything such a life changer my 3rd order so far and I love them!!

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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
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Rated 5 out of 5
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Reviewed by Hanna R.
Verified Buyer
Rated 5 out of 5

Completely Changed My Period

Knix has completely changed my period process. I used to wear pads and had to deal with leaks and general bulkiness. I started buying Knix products, and with the Super Leakproof shorts in particular, I have been able to nearly eliminate pads altogether. I've used one pad in six months (ONE, people!), and I'm never going back. (And yes, if you'll be out and about all day, you can totally layer a pad inside of these, then ditch it once it's full. Lets you go all day without having to find a way to somehow tuck an extra pad or tampon inside your running shorts, ya know?)

Never mind the fact that this is for teens (I'm 31 and love the fun colors), and that these are supposed to be for sleeping (full coverage AND crazy high absorbency? Yes, please!)--I use them all the time. I told my husband that I don't dread my period anymore because I hardly know it's happening now.

If you're on the fence, this is totally worth it. If you're an adult like me, look past the crazy eye makeup on the models (kids these days!), find your size (they'll have it), and buy this much cheaper KT version of the Knix Dream Shorts. You will be very glad you did!

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