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| Warm Sand
Leakproof UltraThin No-Show High Rise
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Color: Warm Sand
New

Color: Warm Sand

Size:

Size:

Mix & Match: 3+ for $25 each
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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
Checkmark

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.
Rewards Members Earn 32 Points

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Super Leakproof® Dream Short

$48.00 CAD

Light Leakproof No-Show Boyshort

$25.00 CAD

WingWoman Contour Bra

$75.00 CAD

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 4,351 reviews
Total 5 star reviews: 3.4k Total 4 star reviews: 523 Total 3 star reviews: 155 Total 2 star reviews: 108 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)
4,351 reviews
  • Rated 2 out of 5 stars
    18 hours 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
    Yesterday
    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
    2 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
    2 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
    3 weeks 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
    3 weeks ago
    Nice

    So thankful to have found Knix and ditched bulky pads.

    F o. D.
    Verified Buyer
    Was this helpful?
  • Rated 1 out of 5 stars
    4 weeks ago
    Not fully leak proof

    They fit well everywhere else, but whenever I sit during my period, the fabric along the edge of the main pad area gets soaked with blood. I’m not sure if I chose the wrong size or if the design just doesn’t provide enough coverage in that area.

    Ellie E.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    4 weeks ago
    Boyshort

    I love these boyshorts because they're halfway between the full coverage of granny panties and bikinis.

    Mary J. D.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 month ago
    love these

    the heavy is excellent for overnight, the cut makes them feel super secure without being too bulky, the fabric is very comfortable stretchy but secure.

    Hils
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 month ago
    Best underwear, hands down

    I have completely replaced my underwear with Knix. After having 2 kids, the bladder leakage issues can lead to embarrassing moments. These underwear have saved me so many times. I love the coverage and fit of the boy shorts.

    Casey C.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 month ago
    The best underwear

    I have completely replaced my underwear with Knix. After having 2 kids, the bladder leakage issues can lead to embarrassing moments. These underwear have saved me so many times. I love the coverage and fit of the boy shorts. I wish they weren’t so pricey, but they are worth it.

    Casey C.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 month ago
    Knix Boy Shorts

    I love this style a lot. They fit fine and zi love the security of the pad in the middle. Especially for those days when you get a little leak. Thank God for Knix!!!!

    Carolyn G.
    Verified Buyer
    Was this helpful?