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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:

Relaxed Fit

•

Size:

Size and Fit Guide

Leakproof Underwear is Sales Tax Free in Canada*

Build Your 3-Pack

Super Leakproof® Dream Boxer™

Color: Lavender Stripe Limited Edition

Size:

Size:

Super Leakproof® Dream Boxer™

Color: Lavender Stripe Limited Edition

Size:

Size:

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

New to leakproof? Your first pair is risk free for 30 days. Wear them, wash them, and see how they work for your body. Not right for you? We'll refund the item price (original shipping excluded). Prefer a different size or style? We also offer free exchanges. Just email info@knix.com and we'll take care of you.

Purchased leakproof before? Within 30 days of delivery you can exchange for another size, style, or store credit. We're unable to provide refunds on underwear. If you ordered multiple pairs, please open, wash, and wear one pair only before initiating an exchange.

Still have questions? View our full policy here.
Rewards Members Earn 48 Points

1 Dream Boxer™ is sold every 3 minutes

No wonder we've sold out 3x times

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
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

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Super Leakproof® Dream Boxer™

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

Color: Lavender Stripe Limited Edition

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Leakproof UltraThin No-Show French Cut

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SuperPlus Leakproof® No-Show High Rise

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Super Leakproof® Dream Team 2-Pack

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The Full Cycle Kit - Bikini

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The Full Cycle Kit - Bikini

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24/7 Leakproof Kit - Bikini

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24/7 Leakproof Kit - High Rise

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The Heavy Flow Kit - Bikini

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The Heavy Flow Kit - High Rise

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Super Leakproof® Dream Team 2-Pack

From 
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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 335 reviews
Total 5 star reviews: 269 Total 4 star reviews: 27 Total 3 star reviews: 17 Total 2 star reviews: 9 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
Write a Review (Opens in a new window)
335 reviews
  • Rated 5 out of 5 stars
    1 hour ago
    Obsessed!

    I use these as back up on night 1 or 2 of my period. They are SO comfy and the perfect amount of coverage. The built in underwear do not ride up or squeeze into my thighs. True to size. You won’t regret buying these.

    Laura B.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    3 hours ago
    5 Stars

    Best and comfy shorts

    Ravneet
    Was this helpful?
  • Rated 5 out of 5 stars
    Yesterday
    Love

    10/10

    Katey T.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    2 days ago
    Love them

    It’s a game changer wearing these at night, not having to worry about making it to the bathroom without accidents.

    Kimberly B.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    2 days ago
    Boxers

    Excellent and so comfortable. Best invention both in one.

    Christine R.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    4 days ago
    Comfy!

    Love these sleep shorts, so comfortable and cute😊

    Deb F.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    6 days ago
    Super Cute

    Definitely does the job at night. Haven’t worn these on my heaviest day, but they have great coverage and are super cute! Very comfortable and I love wearing them as shorts.

    Juliana D.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    6 days ago
    So comfortable!

    These shorts are super comfortable. They are also very absorbent so I can rest well knowing they won't leak! I do wish they had pockets, though.

    Courtney S.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 week ago
    Best boxer Ever!

    *****% recommend, worry free perfect nights sleep for someone who struggles with heavy heavy periods. Will be buying more!

    Loren H.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 week ago
    Cute boxer shorts

    Comfortable, pretty, board sborts. Tge fittvis comfortable abnd tve snl zgrope is. Ute. I will hacecmmm

    Barbara W.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 week ago
    5 Stars

    So comfortable! Fits great.

    Nicole
    Was this helpful?
  • Rated 5 out of 5 stars
    1 week ago
    Comfy & Function

    These are so comfortable, I will wear them when I am not in the middle of a cycle. They offer the perfect level of comfort while also being useful. The waist band is not too tight and the shorts are the perfect length to stay cool during the night. I have been searching for options other than the standard giant pads to wear to bed and these are it! I already own two pairs and will definitely be purchasing more.

    Elizabeth S.
    Verified Buyer
    Was this helpful?

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