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Size:

Size:

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Home / Boyshort Underwear / Super Leakproof® No-Show Boyshort
New

Super Leakproof® No-Show Boyshort

$32.00 CAD

Mix & Match: 3+ for $25 each
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Absorbs about 6 super tampons

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Invisible under clothes

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Extended gusset for extra protection

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Machine washable

| Black
| Black
| Black
| Black
| General

Absorbency: Heavy

Heavy
Drop
Drop
Drop
Drop
Drop
about 3-6 super tampons
Essential
Drop
Drop
Drop
Drop
Drop
No Absorbency
Light
Drop
Drop
Drop
Drop
Drop
about 1-3 regular tampons

Color: Black

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.
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Comfort-First Fit

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

Worry-Free Protection

Patented bonded edges help prevent side leaks.

Heavy Absorbency

Absorbs 6 Super tampons worth of liquid—perfect for heavy flow days, overnight protection, and light bladder leaks.

No More Panty Lines

Made from our signature buttery-soft fabric and designed to be invisible under clothes, including leggings.

Easy to Wash

Machine washable just like regular underwear.

Zoom

| Black
| Black
| Black
| Black
| 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
PATENTED LEAKPROOF TECHNOLOGY

Built-in protection that feels like nothing at all

Our original Fresh Fix Technology® features a built-in absorbent liner absorbing about 3-6 super tampons worth of liquid so you feel fresh and in-control.

Soft Top Layer

Soft Top Layer

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

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4.6
Rated 4.6 out of 5 stars
Based on 4,357 reviews
Total 5 star reviews: 3.5k Total 4 star reviews: 523 Total 3 star reviews: 156 Total 2 star reviews: 109 Total 1 star reviews: 117
93%would recommend these products
ComfortRated 4.7 on a scale of 1 to 5
EffectivenessRated 4.6 on a scale of 1 to 5
FitRated 0.0 on a scale of minus 2 to 2
Ease of UseRated 4.6 on a scale of 1 to 5
Write a Review (Opens in a new window)
4,357 reviews
  • Rated 2 out of 5 stars
    Yesterday
    fussy girl

    i like the newermore coverage boyshort in all honesty.

    Sharie K.
    Verified Buyer
    Was this helpful?
  • Rated 3 out of 5 stars
    Yesterday
    Love the fit - not enough coverage for real leakage protection.

    Like all the knix underwear I have bought, I love the fit and feel, but unfortunately the gusset in the front is not enough. It should go up another 2 inches in my opinion. These would also benefit from another two inches in the back. I don't know who these people are with a "heavy flow" but for me it they just don't prevent leakage the way they are made now. There's no way they absorb 6 super tampons worth. Not because they can't absorb that much, but they just don't absorb fast enough, so there is leakage in the front and in the back on my heavier days. These are fine for the 4th day on for me, but not on days 1-3. I just wish the "super leak proof" options had more coverage, front and back - but not all the way up the back like the "ultra" leakproof. If these problems were addressed I would definitely buy more!

    Dione
    Verified Reviewer
    Was this helpful?
  • Rated 5 out of 5 stars
    2 days ago
    Great Boyshort Brief

    I have purchased several boyshort leakproof briefs from Knix and this one is the best. The fit is perfect and the leakproof feature is better than ever! Thank you.

    Pat M.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    5 days ago
    Boyshorts

    Not sure about these. They are very comfortable but I thought I was buying for overnight protection and they did not do the job properly. So have not worn them for a full day.

    I like them and they are comfortable so may add to my stockpile buy for day wear only.

    Maureen P.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    5 days ago
    More front coverage! YES!!!

    These Super Leakproof Boyshort 2.0 underwear have made me return to Knix. The extended gusset creates significantly more front coverage!

    TL
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 week ago
    Very comfy and used to come in many colours

    I LOVE these shorts, and have worn nothing else for the past 5 years. I have about 20 pairs. I would like to replace some of my oldest pairs, but I n oh rice that you only seem to have about three colours available. Part of the reason I like this underwear is the beautiful colours and patterns they come in. When will you offer them in more colours?

    Karon F.
    Verified Reviewer
    Was this helpful?
  • Rated 2 out of 5 stars
    1 week ago
    Waist Too short

    Not comfortable because the waist was too short.

    Linda G.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 week ago
    Love them

    I love them I noticed that you're not showing very many boy shorts are you discontinuing them.?

    Alice A. C.
    Verified Buyer
    Was this helpful?
  • Rated 4 out of 5 stars
    3 weeks ago
    Super Leakproof No-Show Boyshort

    Yes it works as advertised.

    Dana T.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    4 weeks ago
    Perfect & comfortable

    Love these for myself, a mom in her 40s! The material is better than any others I’ve tried and I love the fit, especially when bloated :)

    Amber H.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 month ago
    comfy and so nice

    love the silky soft material and not having to worry about leaks and the fit of these is so far the best for me

    Janis A.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 month ago
    Nice

    So thankful to have found Knix and ditched bulky pads.

    F o. D.
    Verified Buyer
    Was this helpful?