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Home / Boxer Underwear / Super Leakproof® Dream Boxer
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Super Leakproof® Dream Boxer

$48.00 USD

2 for $80, Save $16
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Absorbs about 7-9 super tampons

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Built in leakproof underwear

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Optimal overnight protection

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Machine washable

Molly has 35.5” hips and wears KNIX S | Plaid

Molly has 35.5” hips and wears KNIX S

| Plaid
Molly has 35.5” hips and wears KNIX S | Plaid

Molly has 35.5” hips and wears KNIX S

| General
| Plaid
| Plaid
| Plaid
| Plaid

Molly has 35.5” hips and wears KNIX S

Absorbency: Heavy

Color: Plaid Limited Edition

Size:

True to Size

•

Size:

Size and Fit Guide

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

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.
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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

Molly has 35.5” hips and wears KNIX S | Plaid
| Plaid
Molly has 35.5” hips and wears KNIX S | Plaid
| General
| Plaid
| Plaid
| Plaid
| Plaid

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

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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Color: Plaid Limited Edition

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Leakproof UltraThin No-Show Bikini

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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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4.6
Rated 4.6 out of 5 stars
Based on 271 reviews
Total 5 star reviews: 217 Total 4 star reviews: 23 Total 3 star reviews: 16 Total 2 star reviews: 6 Total 1 star reviews: 9
89%would recommend this product
FitRated 0.1 on a scale of minus 2 to 2
ComfortRated 4.5 on a scale of 1 to 5
EffectivenessRated 4.5 on a scale of 1 to 5
Ease of UseRated 4.7 on a scale of 1 to 5
Write a Review (Opens in a new window)
271 reviews
  • Rated 5 out of 5 stars
    4 minutes ago
    Bought for my tween

    I honestly thought we’d be returning this, but she loves it so much she was willing to pay for half of it herself. I personally thought it would be better value to just buy more regular leakproof underwear and separate boxers, but she’s very happy with it.

    Salina S.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    2 days ago
    Cool and comfortable for sleeping

    Very cool & comforting for sleeping

    Sandra P.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    4 days ago
    Love these!

    Most comfortable and most absorbing for sleep.

    Melissa W.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    4 days ago
    Dream boxer

    I love everything I order from knix

    Marlène F.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    5 days ago
    review

    LOVE

    Michelle M.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 week ago
    😍

    It is very life changing! I'll definitely recommend this

    Adelaide F.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 week ago
    Dream Boxers

    Love them! Very comfy!

    Catherine L.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 week ago
    Perfect even when not on my period!

    These are the perfect sleeping shorts. Comfortable and soft. I love wearing them all the time!

    Megan L.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 week ago
    Super comfy

    I ordered a few different period underwear brands and this one is the best by far.

    hailey e.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 week ago
    Love them

    Super cute and comfy and protective

    Diana P.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 week ago
    Amazing

    Great product

    leymi c.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    2 weeks ago
    5 Stars

    A little on the big side but work great!

    Ashlee
    Was this helpful?

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