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Color: Black
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Color: Black

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Size:

Size and Fit Guide

Mix & Match: 3+ for $20 each
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KnixTeen

Teen Leakproof UltraThin No-Show Boyshort

$25.00 CAD

Bundle & Save: 3 for $65
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Absorbs about 2.5 super tampons

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Invisible under clothes

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Superior protection without the bulk

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Machine washable

| Electric Orchid
| Electric Orchid
| Electric Orchid
| General
| General
| General
| General
| General

Color: Electric Orchid Limited Edition

Size:

True to Size

Size:

Size and Fit Guide

Leakproof Underwear is Sales Tax Free in Canada*
Free Shipping on orders $100+

Shipping

Shipping
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.

Easy Exchanges within 30 Days

Returns

Returns
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.

Sale & Last Call

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

Rewards Members Earn 25 Points

Comfort-First Fit

Boyshort silhouette with a mid-rise fit and extra hip and bum coverage.

Worry-Free Protection

Our newest leakproof innovation provides more absorbency without the bulk. Patented 360 LeakSeal™ technology locks in leaks at every edge.

Moderate Absorbency

Absorbs 2.5 super tampons worth of liquid—perfect for moderate flow days, light bladder leaks, and sweat. The carbon cotton gusset top layer keeps you dry.

No-Show Style

Buttery-soft and smooth fabric gives a seamless look and feel. Disappears under clothes, even leggings.

Easy to Wash

Machine washable just like regular underwear.

Zoom

| Electric Orchid
| Electric Orchid
| Electric Orchid
| General
| General
| General
| General
| General

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
    6-11 tsp
  • pad
    about 1.5-3 regular pads
  • tampon
    about 3-6 super tampons
  • cup
    about 1-2 menstrual cups

Light

Drop
Drop
Drop
Drop
Drop
  • light period days
  • sweat
  • sweat and 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 3-6 tsp
  • pad
    about 1-1.5 regular pads
  • tampon
    about 2-3 super tampons
  • cup
    about 0.5-1 menstrual cups

Ultra

Drop
Drop
Drop
Drop
Drop
  • extra heavy period days
  • overnight protection
  • light bladder leaks
  • tsp
    13-17 tsp
  • pad
    3.5-4.5 regular pads
  • tampon
    7-9 super tampons
  • cup
    2-3 menstrual cups
FRESH FIX TECHNOLOGY®

Built-in protection that feels like nothing at all.

Our patented 360 LeakSeal™ technology locks in leaks at every edge. The ultra-thin liner absorbs about 2.5 super tampons worth of liquid.

Soft Top Layer

Soft Top Layer

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

4.5
Rated 4.5 out of 5 stars
Based on 49 reviews
Total 5 star reviews: 36 Total 4 star reviews: 6 Total 3 star reviews: 2 Total 2 star reviews: 4 Total 1 star reviews: 1
88%would recommend these products
ComfortRated 4.6 on a scale of 1 to 5
FitRated 0.0 on a scale of minus 2 to 2
EffectivenessRated 4.3 on a scale of 1 to 5
Ease of UseRated 4.5 on a scale of 1 to 5
49 reviews
  • Rated 3 out of 5 stars
    3 weeks ago
    Moderate absorbency leaked

    I purchased these for my daughter. I had previously purchased in store, then again online. The sales associate recommended moderate absorbency because it was her first one. They leaked. At first I thought maybe she worn them for too long. But after making her wear it for only two or three hours it still leaked.

    I suggested to start your teen out with heavy

    absorbency. This made my child feel more comfortable and confident during her cycle.

    Roxanne R.
    Verified Buyer
  • Rated 5 out of 5 stars
    3 weeks ago
    Love them!

    These cute underwear are so comfortable and of such good quality. They last and look just as good two years down the line from when they have just been bought. The Knix company is run by Canadians and the company has such good ethics and customer service, truly helping their customers when they need anything. Thank you Knix!

    Teresa G.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 month ago
    Bon achat

    La taille est adéquate et elles sont très confortables

    Melanie H.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 month ago
    5 Stars

    They fit very well, and the size guide was very accurate! Super comfortable, hughly recommend!

    Stephanie
    Verified Buyer
  • Rated 5 out of 5 stars
    1 month ago
    Teen Boyshorts

    I am an older gal, enjoying the teen " boyshorts ,"...I love the fit and comfort !! Medium fits much better than the large I ordered previously

    Pat M.
    Verified Buyer
  • Rated 5 out of 5 stars
    3 months ago
    They are amazing

    Picked these up for my niece and she loved them!

    Nicole k.
    Verified Buyer
  • Rated 5 out of 5 stars
    3 months ago
    Leakproof underwear

    Perfect for every day wear.

    Comfortable.

    Carla C.
    Verified Buyer
  • Rated 4 out of 5 stars
    3 months ago
    Game changer

    My daughter loves these. They fit well, are comfortable (even during sports) and wash well. Going back to order more.

    Erin C.
    Verified Buyer
  • Rated 5 out of 5 stars
    3 months ago
    Great product!

    My daughter loves this underwear and has no problem wearing them. Easy to wash and she says they are very comfortable :)

    jessica m.
    Verified Buyer
  • Rated 5 out of 5 stars
    4 months ago
    Great pre-teen undies!

    My daughter loves these. They fit tts and are super comfortable.

    Ashley G.
    Verified Buyer
  • Rated 5 out of 5 stars
    4 months ago
    Perfect for preteen.

    Comfortable and effective for young girl new to monthly menstruation

    Tamara G.
    Verified Buyer
  • Rated 4 out of 5 stars
    4 months ago
    Underwear

    Love these boy short underware

    Bea B.
    Verified Buyer