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Sale

Leakproof Logo Modal Rib Boxer Brief - Last Call

$24.50 CAD

$35.00

30% off

Absorbs about 1 regular tampon

Ultra-soft ribbed modal

Perfect for daily wear

Machine washable

Esther has 38

Esther has 38" hips and wears KNIX M

  | Grey
Esther has 38

Esther has 38" hips and wears KNIX M

Esther has 38

Esther has 38" hips and wears KNIX M

| General
| General
| General

Esther has 38" hips and wears KNIX M

Color: Grey

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.

Last Call Return Policy

Sale & Last Call

Our Sale Policy

Here's how returns and exchanges work for sale items.

  • Items discounted up to 30% are eligible for a size exchange or store credit
  • Items discounted above 30% are final sale. No refunds, store credits, or exchanges
  • Not sure where your item lands? Chat with us and we'll check for you

Still have questions? View our full policy here.

Rewards Members Earn 24 Points

Product Description

Easy-to-wear underwear meets a new, must-have look. Soft modal spandex in a boxer-style silhouette with signature Knix logo waistband—in other words— these are your next favorite pair. Featuring our built-in leakproof technology so that you can use them as backup period protection or on their own on lighter days.

Comfort-First Fit

This boxer style sits at the natural waistline with full bum coverage.

Worry-Free Protection

Our original leakproof technology offers a barely there feel while patented bonded edges help prevent side leaks.

Light Absorbency

Absorbs 1 regular tampon worth of liquid—perfect for light flow days, sweat and discharge, and backup protection for heavy flow days.

Easy to Wash

Machine washable just like regular underwear.

Zoom

Esther has 38
  | Grey
Esther has 38
Esther has 38
| General
| General
| General

How to Choose?

Essential

  • Days you don’t need leak protection. Everyday freshness and moisture wicking.
  • tsp
    0 tsp

Heavy

  • Extra peace of mind. For the first days of your cycle, light bladder leaks, or a full night's sleep without a leak.
  • 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

  • Daily freshness. For sweat, discharge, period spotting, or backup protection.
  • tsp
    about 1-3 tsp
  • pad
    about 1-3 pantyliners
  • tampon
    about 1-3 regular tampons
  • cup
    about 0.5 menstrual cups

Moderate

  • For mid-cycle flow, surprise cough or sneeze leaks, or a really sweaty spin class.
  • 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

  • Ultimate peace of mind. For the heaviest period days, light bladder leaks, unexpected postpartum flow, or overnight protection.
  • 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
4.1
Rated 4.1 out of 5 stars
Based on 160 reviews
Total 5 star reviews: 101 Total 4 star reviews: 20 Total 3 star reviews: 14 Total 2 star reviews: 6 Total 1 star reviews: 19
Reviews Summary
Customers say these boxer briefs are extremely soft and comfortable, with many praising the modal fabric for its lightweight feel. The waistband receives mixed feedback, with some finding it tight or uncomfortable while others appreciate its flexibility. Many reviews mention the extended back coverage for leak protection during sleep, though some note this creates a bulky or diaper-like feeling. Common sizing concerns include the fit running large or loose, with several customers recommending sizing down. The back seams are frequently mentioned as uncomfortable or noticeable under clothing. While most find them perfect for sleeping and lounging, some experience issues with riding up or the waistband sliding down during wear.
75%would recommend this product
ComfortRated 4.1 on a scale of 1 to 5
EffectivenessRated 4.1 on a scale of 1 to 5
FitRated 0.1 on a scale of minus 2 to 2
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160 reviews
  • Rated 5 out of 5 stars
    10 hours ago
    Modal boxer brief

    So soft and comfortable. Perfect for sleep. Could also wear it during the day as its not bulky at all.

    Hallie S.
    Verified Buyer
    Reviewing
    Leakproof Logo Modal Rib Boxer Brief - Last Call
  • Rated 5 out of 5 stars
    3 weeks ago
    Underwear

    My austim daughter loves thus kind of underwear she won’t use any other one thank you 😊

    Lisa c.
    Verified Buyer
    Reviewing
    Leakproof Logo Modal Rib Boxer Brief - Last Call
  • Rated 5 out of 5 stars
    3 weeks ago
    My Favorite

    This style is my go-to for spotting and light flow days. They are even breathable enough to wear as regular undies, which I do frequently because they're so comfy!

    Emily B.
    Verified Buyer
    Reviewing
    Leakproof Logo Modal Rib Boxer Brief - Last Call
  • Rated 5 out of 5 stars
    2 months ago
    5 Stars

    like how soft it feels😊

    Vienna
    Reviewing
    Leakproof Logo Modal Rib Boxer Brief - Last Call
  • Rated 5 out of 5 stars
    3 months ago
    Very comfortable for warm weather!

    Fit is great, absorption could be improved at the edges.

    Thank you for one of the best products out there

    Deb C.
    Verified Buyer
    Reviewing
    Leakproof Logo Modal Rib Boxer Brief - Last Call
  • Rated 5 out of 5 stars
    3 months ago
    5 Stars

    Love these shorts, they’re so soft even after washing a bunch of times! Super comfy, I’d buy 5 pairs if I could!

    Lauren
    Reviewing
    Leakproof Logo Modal Rib Boxer Brief - Last Call
  • Rated 5 out of 5 stars
    3 months ago
    5 Stars

    Love the fit! Super comfy and the leakproof goes all the way uo the back amazing fo piece of mind during that time of the month! Would recommend

    Samantha
    Reviewing
    Leakproof Logo Modal Rib Boxer Brief - Last Call
  • Rated 5 out of 5 stars
    3 months ago
    Best ever!

    Quite possibly the most comfortable underwear I have ever worn! They get a little loose throughout the day, but when washed, they shrink back to size.

    Martha M.
    Verified Buyer
    Reviewing
    Leakproof Logo Modal Rib Boxer Brief - Last Call
  • Rated 5 out of 5 stars
    4 months ago
    Comfort & Joy

    My granddaughter absolutely loved these. So soft and comfortable.

    Karen B.
    Verified Buyer
    Reviewing
    Leakproof Logo Modal Rib Boxer Brief - Last Call
  • Rated 5 out of 5 stars
    4 months ago
    These beat my Woxers

    Far superior boxers, I got a great deal too

    Ruth L.
    Verified Buyer
    Reviewing
    Leakproof Logo Modal Rib Boxer Brief - Last Call
  • Rated 5 out of 5 stars
    4 months ago
    AMAZING

    I absolutely love everything about them !

    Cora Y.
    Verified Buyer
    Reviewing
    Leakproof Logo Modal Rib Boxer Brief - Last Call
  • Rated 5 out of 5 stars
    4 months ago
    Very comfortable!!!

    These briefs are so comfortable I intend to buy more.

    Susan D.
    Verified Buyer
    Reviewing
    Leakproof Logo Modal Rib Boxer Brief - Last Call

Your questions, answered.