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Home / Up to 60% off Teen / Teen Super Leakproof® Sleepover Boxer
KnixTeen

Teen Super Leakproof® Sleepover Boxer

Absorbs about 7-9 super tampons worth of liquid.
$45.00 CAD

*Excluded from Sale
| Black
| Black
| Black
| Black
| Black
| Black
| Black
| Black

Absorbency: Heavy
Drop
Drop
Drop
Drop
Drop

Color: Black

Size:

True to Size

•

Size:

Size and Fit Guide

Leakproof Underwear is Sales Tax Free in Canada*
Get FREE Express Shipping on all orders $125+

Shipping

HOLIDAY SHIPPING

Give the gift of Knix! To receive your order by Dec 24th, please order by the following dates.

Toronto, Ottawa, Montreal, Winnipeg, Regina, Calgary, Edmonton, Vancouver
Standard & Expedited: Monday, December 22

Urban Centres (excluding the above)
Standard: Wednesday, December 17
Express: Sunday, December 21

Rest of Canada
Standard: Sun, December 14*
Express: Thu, December 18*
*YK, NWT, NT, NL, and remote areas across Canada.

For locations serviced solely by Canada Post, please allow at least 5 additional days due to rotating strikes. This applies to P.O Box and RR addresses.

To avoid any additional delays during the rotating strikes, we will use alternate carriers when possible.

Please note: Weather conditions and carrier issues may cause delays. Delivery dates are not guaranteed.

Processing Timelines
Please allow 1-2 business days for our warehouse team to pack and ship your order. During peak periods such as sales, holidays and product launches, please allow up to 4 business days for us to process your order.

Delivery Time
For the most up-to-date delivery time estimates, please refer to the shipping timeline at checkout. Delivery timelines vary depending on location and do not include processing times.

Shipping Charges
Orders over $100* CAD = Free Shipping (2-6 business days)
Orders under $100* CAD = $12 CAD Shipping (1-3 business days)
Orders delivering to NWT, Nunavut and Yukon are subject to $20 delivery fee.
*After discounts, before shipping and taxes.
Year End Sale Return Policy

Returns

Returns

Sale & Last Call

Items discounted 30% and below are eligible for size exchange or store credit. Items discounted above 30% and above are final sale – no refunds, store credits, or exchanges can be accommodated.

Free Returns

Knix covers the return shipping fees for exchanges and refunds initiated through our Return & Exchange Portal. Exchange orders initiated through our Return & Exchange portal are also eligible for free shipping within the USA and Canada. Please note, the shipping fees on your original order are non-refundable.

Return Policy

Return policy varies by product, please check if your item is refund or exchange eligible by viewing our full policy here.
Rewards Members Earn 45 Points

Comfort-First Fit

Combining a loose-fitting boxer with an internal brief for discreet Leakproof protection. Designed to be worn as both loungewear and overnight protection.

Worry-Free Protection

Designed with a built-in leakproof liner that fits snug to the body, it helps lock in leaks from every angle, even as you toss and turn.

Ultra Absorbency

Absorbs 7-9 super tampons' worth of liquid for overnight protection, heavy flow days, and light bladder leaks.

Machine Washable

Machine washable, just like regular underwear.

Zoom

| Black
| Black
| Black
| Black
| Black
| Black
| Black
| Black

How to Choose?

Essential

Drop
Drop
Drop
Drop
Drop
  • • Everyday Wear
  • • No leakproof protection
  • tsp
    0 tsp

Heavy

Drop
Drop
Drop
Drop
Drop
  • • heavy period days
  • • overnight protection
  • • light bladder leaks
  • tsp
    about 8-14 tsp
  • pad
    about 1.5-3 regular pads
  • tampon
    about 4-7 super tampons
  • cup
    about 1.5-3 menstrual cups

Light

Drop
Drop
Drop
Drop
Drop
  • • light period days
  • • sweat
  • • discharge
  • tsp
    about 1-3 tsp
  • pad
    about 1-3 pantyliners
  • tampon
    about 1-3 regular tampons
  • cup
    about 0.5 menstrual cups

Moderate

Drop
Drop
Drop
Drop
Drop
  • • moderate period days
  • • light bladder leaks
  • • sweat
  • tsp
    about 4-8 tsp
  • pad
    about 1-1.5 regular pads
  • tampon
    about 2-4 super tampons
  • cup
    about 0.5-3 menstrual cups

Ultra

Drop
Drop
Drop
Drop
Drop
  • • extra heavy period days
  • • overnight protection
  • • light bladder leaks
  • tsp
    about 15-20 tsp
  • pad
    about 1.5-2.5 super pads
  • tampon
    about 7-11 super tampons
  • cup
    about 2-3 menstrual cups
FRESH FIX TECHNOLOGY®

Built-in protection that feels like nothing at all.

So you feel fresh and in-control. Absorbs ~ 7-9 Super tampons.

Soft Top Layer

Soft Top Layer

Gently wicks away moisture while keeping you feeling fresh and odor-free.

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4.4
Rated 4.4 out of 5 stars
Based on 18 reviews
Total 5 star reviews: 12 Total 4 star reviews: 2 Total 3 star reviews: 4 Total 2 star reviews: 0 Total 1 star reviews: 0
78%would recommend this product
ComfortRated 4.4 on a scale of 1 to 5
FitRated 0.2 on a scale of minus 2 to 2
EffectivenessRated 4.3 on a scale of 1 to 5
Ease of UseRated 4.6 on a scale of 1 to 5
Write a Review (Opens in a new window)
18 reviews
  • Rated 5 out of 5 stars
    22 seconds ago
    Comfort and Confidence

    These boxers are cute and comfortable. They give confidence for overnight sleepovers and lounging around.

    Miranda O.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 week ago
    👍

    Absolutely love them. Very comfortable. I wish there was a regular non leakproof version as well. I would buy them again.

    Erin W.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 week ago
    Very comfortable

    Bought this for my daughter when on sale. Fits good and it is comfortable. Looks good as well.

    Laura N.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    2 weeks ago
    Confidence boosters

    These boxers have given my teen a sense of confidence and control with managing her period. I have recommended them to parents more times than I can count!

    Julie B.
    Verified Buyer
    Was this helpful?
  • Rated 3 out of 5 stars
    3 weeks ago
    Runs a little large

    i really like the idea of these. They seems well made but despite measuring and following the size guide, i found it was rather large on me, so I am nervous it won't be leak free.

    Nicola F.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    3 weeks ago
    So cute!

    I love these period boxers - I wear them even when I’m not on my period they are so nice. I wish the front gusset was a bit longer, as I flow forward. My mom is jealous of the cool teen colours. Will be buying more.

    Jennifer R.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    3 weeks ago
    Love these Sleepover Boxers!

    I have one in every color!! My absolute favorite sleepwear. You’ll love them!

    Vickie C.
    Verified Buyer
    Was this helpful?
  • Rated 3 out of 5 stars
    1 month ago
    Sleepover boxer

    I love the idea but wish the underwear inside the boxer had the coverage /cut of boyshorts. These fit like bikini underwear & they didn’t have enough coverage for me.

    Darla R.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 month ago
    Love this new innovation!

    I have always heard of knix and period underwear but was always reluctant to try due to the high price and doubt that it would work. I LOVE my new sleeper boxer knix! It helps me be worry free when sleeping on my period. Im always worried about leaking and even sleep on my side during my period to avoid it, which ends in body pain from the uncomfortable sleeping positions. Now, Im able to put on my boxers and sleep without any worry. I do have to say I expected them to fit oversized but they fit pretty snug.

    Olivia L.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    2 months ago
    Love them!

    I wore them for the first time last week and it’s so comfortable. Like wearing board shorts at the beach with underwear included. So comfy almost feel that I could wear them without pants or shorts on top. Like PJ shorts.

    Dashton G.
    Verified Buyer
    Was this helpful?
  • Rated 4 out of 5 stars
    2 months ago
    So cute!

    Great addition to teen loungewear. Bought for my daughter… perfect for sleepovers and hanging around the house! She really likes them. Great fit and comfortable.

    Alisa B.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    2 months ago
    Amazing

    I bought these for my daughter who is having issues with her heavy flow. She wore the sleepover boxers to school and didn't have any leaks. Will definitely be purchasing a couple more of these boxers.

    Shawna B.
    Verified Buyer
    Was this helpful?