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Super Leakproof® Dream Boxer™

$48.00 CAD

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

Absorbs about 7-8 super tampons

Built in leakproof underwear

Optimal overnight protection

Machine washable

Binta has 44” hips and wears KNIX L | Blue Stripe

Binta has 44” hips and wears KNIX L

Binta has 44” hips and wears KNIX L | Blue Stripe

Binta has 44” hips and wears KNIX L

Binta has 44” hips and wears KNIX L | Blue Stripe

Binta has 44” hips and wears KNIX L

Binta has 44” hips and wears KNIX L

Color: Blue Stripe

Size:

Relaxed Fit

Size:

Size and Fit Guide

Leakproof Underwear is Sales Tax Free in Canada*

Build Your 3-Pack

Binta has 44” hips and wears KNIX L | Blue Stripe

Super Leakproof® Dream Boxer™

Color: Blue Stripe

Size:

Size:

Binta has 44” hips and wears KNIX L | Blue Stripe

Super Leakproof® Dream Boxer™

Color: Blue Stripe

Size:

Size:

Binta has 44” hips and wears KNIX L | Blue Stripe

Super Leakproof® Dream Boxer™

Color: Blue Stripe

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 5x 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 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 up to 8 super tampons. Great for heavy flow days, overnight protection, and light bladder leaks.

Easy to Wash

Machine washable, just like your regular underwear.

Zoom

Binta has 44” hips and wears KNIX L | Blue Stripe
Binta has 44” hips and wears KNIX L | Blue Stripe
Binta has 44” hips and wears KNIX L | Blue 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

How it Compares

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.

4.6
Rated 4.6 out of 5 stars
Based on 437 reviews
Total 5 star reviews: 349
Total 4 star reviews: 36
Total 3 star reviews: 22
Total 2 star reviews: 14
Total 1 star reviews: 16
Reviews Summary
Customers say these boxers are incredibly comfortable and soft, perfect for sleeping and lounging. Many appreciate the cute designs and lightweight, breathable fabric that doesn't feel heavy. Common feedback highlights reliable overnight protection and easy cleanup. However, sizing runs large—most reviewers recommend sizing down for a better fit. Some note the built-in gusset could be larger, and a few wish for pockets or higher rise. Overall, customers love them as comfortable sleepwear with practical functionality.
88%would recommend this product
ComfortRated 4.7 on a scale of 1 to 5
EffectivenessRated 4.5 on a scale of 1 to 5
FitRated 0.2 on a scale of minus 2 to 2
Keywords
Keywords
Rating
Ratings
Height
Height
How do you use your Leakproof?
How do you use your Leakproof?
Usual Pant Size
Usual Pant Size
437 reviews
  • Rated 5 out of 5 stars
    3 hours ago
    So comfy

    I had to go down a size from my regular my regular size but I love how comfortable they are and they protect well with no leaks. I can sleep well knowing I’m protected.

    AV
    Audrey V.
    Verified Buyer
  • Rated 5 out of 5 stars
    19 hours ago
    Love!

    Love these! Please, please, please make a SuperPlus version!

    SE
    Sarah E.
    Verified Reviewer
  • Rated 5 out of 5 stars
    Yesterday
    Love it

    Love it

    CD
    Christine D.
    Verified Buyer
  • Rated 5 out of 5 stars
    2 days ago
    Comfy and so cute with great protection

    Loved having these boxers to wear to bed during my cycle. They do definitely run a little big, which honestly, is great, because who wants tight panties when you feel your most unsexy? My cycle tends to be super light, fortunately, so I haven’t had any issues with leakage. They have “panties” build in so they fit more snuggly (kind of like those Nike shorts we were all obsessed with in the 2010s). I am 5’9” and around 140-150 lbs. Waist 27” and hips 37-38”. I got a medium and I have room in the band, but the panty inside fits comfortably. I would consider sizing down next time, but the medium is perfectly fine. I would love if there was a coordinating top with them to make it a cute set!

    AK
    Alex K.
    Verified Buyer
  • Rated 5 out of 5 stars
    2 days ago
    5 Stars

    Extremely comfortable!

    B
    Bob
  • Rated 5 out of 5 stars
    3 days ago
    Sleep boxers

    Comfortable. Great size. Breathable

    CW
    Carla W.
    Verified Buyer
  • Rated 5 out of 5 stars
    4 days ago
    5 Stars

    Works great and is super comfortable

    S
    Sydney
  • Rated 5 out of 5 stars
    4 days ago
    Great

    So well made and comfortable! So glad I ordered them!

    MM
    Melissa M.
    Verified Buyer
  • Rated 5 out of 5 stars
    5 days ago
    Been missing these my whole life.

    I love these shorts. They are so comfortable that you can't even tell they have a larger purpose that just being pajamas. I hated wearing a liner or tampon to sleep in especially, but now I don't use them at all. Not to be dramatic, but I cannot imagine period sleep without these now. I have three pairs now and will continue to get more. I am a size 4-6 depending and the medium fits well, I could probably get a small but these are likely more comfortable. And they just look like regular pajama shorts that are cute and so comfy. Knix, I love you and please never leave me.

    K
    Kathleen
    Verified Buyer
  • Rated 5 out of 5 stars
    5 days ago
    Love the dream shorts

    My daughter absolutely loves these and wears then even when not on her period.

    LD
    Leah D.
    Verified Buyer
  • Rated 5 out of 5 stars
    5 days ago
    5 Stars

    Perfect fit and so comfortable

    L
    Lauryn
  • Rated 5 out of 5 stars
    1 week ago
    Absolutely love

    Soft, comfortable, absorbent. No more waking up to myself or my partner in a puddle. Like wearing your man’s boxers, but much better.

    MJ
    Megan J.
    Verified Buyer

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