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Leakproof UltraThin No-Show Boybrief

$23.80 CAD

$34.00

20-40% off
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Absorbs about 2.5 super tampons

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Invisible under clothes

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Moderate protection without the bulk

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Machine washable

| Dark Cherry
| Dark Cherry
| Dark Cherry
| Dark Cherry

Color: Dark Cherry Limited Edition

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 23 Points

Comfort-First Fit

Mid-rise boybrief silhouette with full bum coverage for a smooth, comfortable fit.

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

| Dark Cherry
| Dark Cherry
| Dark Cherry
| Dark Cherry

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.

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.

4.8
Rated 4.8 out of 5 stars
Based on 64 reviews
Total 5 star reviews: 56 Total 4 star reviews: 4 Total 3 star reviews: 4 Total 2 star reviews: 0 Total 1 star reviews: 0
94%would recommend this product
64 reviews
  • Rated 3 out of 5 stars
    4 minutes ago
    Fair

    Rather have hiphuggers. Boyshorts ride on lega. Don't like high rise armr all or bikini ottoman thing Bring back hiphugger please

    Bonnie H.
    Verified Buyer
  • Rated 5 out of 5 stars
    Yesterday
    Boy Shorts!

    Love these. Comfortable and pretty. Boy shorts are my preferred panty and not offered everywhere, especially this comfortable.

    Lisa D.
    Verified Buyer
  • Rated 5 out of 5 stars
    Yesterday
    Bot shorts

    I love Knix boy briefs. Comfortable and reassuring.

    Helen W.
    Verified Buyer
  • Rated 5 out of 5 stars
    Yesterday
    Fit

    Love the way they fit

    Sherrie B.
    Verified Buyer
  • Rated 4 out of 5 stars
    2 days ago
    Comfy and lightweight

    Comfy and lightweight. Some rolling at the waistband, but I probably could’ve sized up.

    Brenna G.
    Verified Buyer
  • Rated 5 out of 5 stars
    3 days ago
    Ultra thin no show boy brief

    Great fit, super comfy and fun pattern

    Cyndi C.
    Verified Buyer
  • Rated 5 out of 5 stars
    4 days ago
    Love the boybrief!

    I am so happy to have this new cut! My bum is rather flat so I hadn't received the coverage I desired until these (although I tried to make the briefs work). Thanks for making a style that offers better coverage for those of us who no longer strive to be flirty - as I complete my sixth decade on earth.

    HEIDI K.
    Verified Buyer
  • Rated 5 out of 5 stars
    4 days ago
    Comfy fit and does the trick!

    These are so comfy and I love how they fit. Not your traditional period panty.

    Morganne S.
    Verified Buyer
  • Rated 5 out of 5 stars
    5 days ago
    5 Stars

    Great

    Carol
  • Rated 5 out of 5 stars
    6 days ago
    No Show Boy-brief

    ⭐⭐⭐⭐⭐

    Bronwen W.
    Verified Buyer
  • Rated 5 out of 5 stars
    6 days ago
    Worry proof comfort

    Being a senior lady, I needed something comfortable & reliable for leaks. These are amazing & fit the requirements. So glad I found knix!

    Susan G.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 week ago
    Best Fit

    I love how Boybriefs fit. They've been my favorite for several years and the Leakproof Ultra Thin No-Show is a real plus for comfort and confidence. Thanks KNIX.

    Ann L.
    Verified Buyer