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Home / Boxer Underwear / Super Leakproof® Dream Boxer™
#1 Overnight Solution

Super Leakproof® Dream Boxer™

$48.00 CAD

Buy 3+ Save 15%, Buy 5+ Save 20%

Absorbs about 7-9 super tampons

Built in leakproof underwear

Optimal overnight protection

Machine washable

| Lavender Stripe
| Lavender Stripe
| Lavender Stripe
| Lavender Stripe
| General
| Lavender Stripe
| Lavender Stripe
| Lavender Stripe
| Lavender Stripe

Absorbency: Heavy

Color: Lavender Stripe Limited Edition

Size:

True to Size

•

Size:

Size and Fit Guide

Leakproof Underwear is Sales Tax Free in Canada*

Build Your 3-Pack

| Lavender Stripe

Super Leakproof® Dream Boxer™

Color: Lavender Stripe Limited Edition

Size:

Size:

| Lavender Stripe

Super Leakproof® Dream Boxer™

Color: Lavender Stripe Limited Edition

Size:

Size:

| Lavender Stripe

Super Leakproof® Dream Boxer™

Color: Lavender Stripe Limited Edition

Size:

Size:

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.
First Pair Risk Free for 30 Days

Leakproof Underwear, Risk Free

Returns & Exchanges

Leakproof Underwear, Risk Free
Trying leakproof underwear for the first time? Your first pair is completely risk free for 30 days. Wear them, wash them, and see how they work for your body. If they’re not right for you, we’ll refund your first pair. Prefer a different size or style? We also offer free exchanges.

How it works:

  • Risk free applies to leakproof underwear on your first order
  • Refund covers the item price (original shipping excluded)
  • Just email info@knix.com and we’ll take care of you

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 48 Points

Product Description

The comfort of a boxer with the power of a pad. The Super Leakproof Dream Boxer offers a relaxed, non-restrictive fit that makes it the perfect choice for lounging and sleeping. Whether you’re managing a heavy period, postpartum recovery, or light bladder leaks, the high-rise waistband and soft-touch fabric provide a supportive feel without digging in. Designed to replace bulky pads and liners, these absorbent boxer briefs offer a sustainable, eco-friendly solution for your monthly cycle. Available in inclusive sizes XS to 4XL.

Comfort-First Fit

Combining a loose-fitting boxer with an internal brief for discreet Leakproof protection. Designed to be worn as both loungewear and overnight protection.

Worry-Free Protection

Designed with a built-in leakproof liner that fits snug to the body, it helps lock in leaks from every angle, even as you toss and turn.

Heavy Absorbency

Absorbs 7-9 super tampons worth of liquid—great for heavy flow days, overnight protection, and light bladder leaks.

Easy to Wash

Machine washable just like regular underwear.

Zoom

| Lavender Stripe
| Lavender Stripe
| Lavender Stripe
| Lavender Stripe
| General
| Lavender Stripe
| Lavender Stripe
| Lavender Stripe
| Lavender Stripe

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
Super Leakproof®Dream Boxer

This best-selling boxer is a game changer.

FRESH FIX TECHNOLOGY®

Built-in protection that feels like nothing at all.

So you feel fresh and in-control.

Our patented 360 LeakSeal™ technology helps lock in leaks from every angle, even if you toss and turn. The internal brief absorbs about 7-9 super tampons worth of liquid, and it’s our heaviest absorbency yet.

Soft Top Layer

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

Our Best-Selling Underwear

Shop All

Super Leakproof® Dream Boxer™

$48.00 CAD
Buy 3+ Save 15%, Buy 5+ Save 20%

Color: Lavender Stripe Limited Edition

+1

Super Leakproof® Dream Short™

$48.00 CAD
Buy 3+ Save 15%, Buy 5+ Save 20%

Color: Meadows Limited Edition

+3

Leakproof UltraThin No-Show High Rise

$32.00 CAD
Buy 3+ Save 15%, Buy 5+ Save 20%

Color: Meadows Limited Edition

+5

Leakproof UltraThin No-Show Bikini

$27.00 CAD
Buy 3+ Save 15%, Buy 5+ Save 20%

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Leakproof UltraThin No-Show French Cut

$27.00 CAD
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SuperPlus Leakproof® No-Show High Rise

$39.00 CAD
Buy 3+ Save 15%, Buy 5+ Save 20%

Color: Twilight Navy

Super Leakproof® Dream Team 2-Pack

From 
$80.00 CAD
$96.00
Save $16

The Full Cycle Kit - Bikini

From 
$125.00 CAD
$159.00
Save $34

Save on Leakproof Sets

The Full Cycle Kit - Bikini

From 
$125.00 CAD
$159.00
Save $34

The Full Cycle Kit - High Rise

From 
$140.00 CAD
$177.00
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24/7 Leakproof Kit - Bikini

From 
$120.00 CAD
$150.00
Save $30

24/7 Leakproof Kit - High Rise

From 
$128.00 CAD
$160.00
Save $32

The Heavy Flow Kit - Bikini

From 
$140.00 CAD
$176.00
Save $36

The Heavy Flow Kit - High Rise

From 
$150.00 CAD
$192.00
Save $42

Super Leakproof® Dream Team 2-Pack

From 
$80.00 CAD
$96.00
Save $16

Super Leakproof® Dream Boxer™ 2-Pack

From 
$80.00 CAD
$96.00
Save $16
4.6
Rated 4.6 out of 5 stars
Based on 319 reviews
Total 5 star reviews: 254 Total 4 star reviews: 27 Total 3 star reviews: 17 Total 2 star reviews: 8 Total 1 star reviews: 13
88%would recommend this product
ComfortRated 4.6 on a scale of 1 to 5
EffectivenessRated 4.5 on a scale of 1 to 5
FitRated 0.1 on a scale of minus 2 to 2
Ease of UseRated 4.7 on a scale of 1 to 5
Write a Review (Opens in a new window)
319 reviews
  • Rated 5 out of 5 stars
    22 hours ago
    Dream Boxers

    I love my Knix boxers. I have had a bad cough for a few weeks now and my boxers have provided the coverage I need…at the age where coughing can cause bladder leaks

    Will definitely buy them again

    Bea B.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    Yesterday
    Night time comfort

    Great comfort and security for periods and leaks. Soft outer fabric and cool breathable inter fabric.

    Francoise J.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    Yesterday
    Exactly what I wanted

    So soft and comfortable. Especially for someone who hates sleeping with clothing on. I was on a super heavy day and was please to wake up with zero leaks or dampness. Happy to not buy tampons ever again!

    Lyndz K.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    2 days ago
    5 Stars

    Love these. So cute and protective

    Cheryl
    Was this helpful?
  • Rated 5 out of 5 stars
    3 days ago
    Boxer

    I love my beautiful boxers. The color is perfect and so comfortable.

    Brenda W.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    5 days ago
    Super Leakproof Dream Boxer

    Bought 3 pair one for each girl and they absolutely love them. They all agree how comfortable they are!

    Pamela K.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 week ago
    Love it

    The short when I have I period it is super confortable! I already using it for 2 cycle and i do not regret it at all

    Melissa J. M.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 week ago
    5 Stars

    Loved them the fit was good comfortable and stay in place.

    Heather
    Was this helpful?
  • Rated 5 out of 5 stars
    1 week ago
    So cute

    Cute and does the job

    Stacia A.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 week ago
    Love these

    These are amazing sleep shorts. Cute and comfy. My new favorite sleepwear.

    Denise V.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 week ago
    So comfy!

    I love these! They’re so soft and feel great. They do run a little large but I don’t mind that! So comfy! Going to buy another pair! Best thing that Knix has to offer!

    Keely T.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 week ago
    Highly recommend

    Great shorts they look good and will ri unbelievably well. Highly recommend

    Patricia M.
    Verified Buyer
    Was this helpful?

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