Skip to content Accessibility Statement

Your Bag

Your cart is empty

But you're full of potential..

Create an account to join Club Knix and earn points on this order
Restocked

Super Leakproof® Dream Boxer™

$48.00 USD

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

Absorbs about 7-8 super tampons

Built in leakproof underwear

Optimal overnight protection

OEKO-TEX® Certified

Machine washable

Back view of model wearing the Super Leakproof® Dream Boxer™ highlighting the coverage and fit
Text on Image: No leaks to interrupt sleep. No more stained sheets. Super soft, pajama-style fit

Color: Mulberry/Pink Stripe Limited Edition

Size:

Relaxed Fit

•

Size:

Size and Fit Guide

Build Your 3-Pack

Super Leakproof® Dream Boxer™

Color: Mulberry/Pink Stripe Limited Edition

Size:

Size:

Super Leakproof® Dream Boxer™

Color: Mulberry/Pink Stripe Limited Edition

Size:

Size:

Super Leakproof® Dream Boxer™

Color: Mulberry/Pink 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. Once an order is placed, we cannot guarantee any address updates, order changes or cancellations. Orders placed on Friday after 1PM will not be shipped until the following Monday.


Split Shipments

Most orders will ship from a single warehouse. However, we occasionally ship from a combination of warehouse locations, so you may receive your order in multiple parts. If items from your order ship in separate packages, we’ll send you tracking information for each package when it becomes available.

Delivery Timelines

For the most up-to-date delivery time estimates, please refer to the shipping timeline at checkout. Delivery timelines do not include processing times. See above for details. All transit times are measured in business days which are Monday-Friday, excluding holidays.

Please note, all shipping timelines are estimates and are not guaranteed.

We are not able to ship to US territories (including Puerto Rico, U.S. Virgin Islands, Guam, Northern Mariana Islands and American Samoa) at this time.

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

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

Why Our Customers Love it

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 548 reviews
89%would recommend these products
FitRated 0.2 on a scale of minus 2 to 2
ComfortRated 4.6 on a scale of 1 to 5
EffectivenessRated 4.6 on a scale of 1 to 5
Keywords
Keywords
Rating
Ratings
Height
Height
How do you use your Leakproof?
How do you use your Leakproof?
Usual Pant Size
Usual Pant Size
548 reviews
  • Rated 5 out of 5 stars
    3 minutes ago
    Highly Recommend

    I was so happy with this purchase as they are amazing!!

    EB
    Eleni B.
    Verified Buyer
    Reviewing
    Super Leakproof® Dream Boxer™
  • Rated 5 out of 5 stars
    3 days ago
    yes yes yes

    literally so cozy

    JD
    Jude D.
    Verified Buyer
    Reviewing
    Super Leakproof® Dream Boxer™
  • Rated 5 out of 5 stars
    4 days ago
    5 Stars

    So comfy size was perfect

    S
    Sevanna
    Reviewing
    Super Leakproof® Dream Boxer™
  • Rated 1 out of 5 stars
    1 week ago
    Wanted to love these

    I may be a sizing issue however getting a lot of side leakage making me not feel secure.

    CM
    Cedrica M.
    Verified Buyer
    Reviewing
    Super Leakproof® Dream Boxer™
  • Rated 2 out of 5 stars
    1 week ago
    Works but uncomfortable

    I had high hopes for these. Seemed like it would be perfect for me for sleeping. Unfortunately I find them very uncomfortable. They are big and bulky and they sit low on my waist. I am always trying to pull them higher and when im trying to sleep it just feels like a diaper. I thought pad were uncomfortable but this is worse. It does do as advertised though. Holds lots of fluid. I found other products more comfortable.

    KD
    Katrina D.
    Verified Buyer
    Reviewing
    Super Leakproof® Dream Boxer™ Kit*
  • Rated 5 out of 5 stars
    1 week ago
    Cute and comfy!

    Happy with my purchase.

    JB
    Janyce B.
    Verified Buyer
    Reviewing
    Super Leakproof® Dream Boxer™
  • Rated 5 out of 5 stars
    1 week ago
    Review

    They are comfortable & TTS!

    MC
    Maggie C.
    Verified Buyer
    Reviewing
    Super Leakproof® Dream Boxer™
  • Rated 5 out of 5 stars
    1 week ago
    Buy These!!

    Couldn’t recommend these more, a bit pricey up front but so worth it in the long run. Use them for overnights and have no issues whatsoever.

    ML
    Molly L.
    Verified Buyer
    Reviewing
    Super Leakproof® Dream Boxer™
  • Rated 5 out of 5 stars
    1 week ago
    Knix Boxers

    These are great. Greatest creation since skorts. Underwear and shorts in one.

    TT
    Theresa T.
    Verified Buyer
    Reviewing
    Super Leakproof® Dream Boxer™
  • Rated 5 out of 5 stars
    2 weeks ago
    5 Stars

    Fits comfortably, it’s too tight

    A
    Alexa
    Reviewing
    Super Leakproof® Dream Boxer™
  • Rated 5 out of 5 stars
    2 weeks ago
    Super league, proof, dream boxer

    Would like them to go higher on the waist

    RM
    Rick M.
    Verified Buyer
    Reviewing
    Super Leakproof® Dream Boxer™
  • Rated 5 out of 5 stars
    2 weeks ago
    Super comfortable

    Would definitely purchase more

    SD
    Sahina D.
    Verified Buyer
    Reviewing
    Super Leakproof® Dream Boxer™

Your underwear questions, answered.