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ACOTAR™ x Knix

Super Leakproof® Dream Boxer™

$48.00 USD

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

Limited-edition ACOTAR™ x Knix collection

Absorbs about 7-8 super tampons

Optimal overnight protection

Machine washable

Text on Image: No leaks to interrupt sleep. No more stained sheets. Super soft, pajama-style fit

Color: Ember Fox Limited Edition

Size:

Relaxed Fit

•

Size:

Size and Fit Guide

Which COURT are you? TAKE THE QUIZ

Build Your 3-Pack

Super Leakproof® Dream Boxer™

Color: Ember Fox Limited Edition

Size:

Size:

Super Leakproof® Dream Boxer™

Color: Ember Fox Limited Edition

Size:

Size:

Super Leakproof® Dream Boxer™

Color: Ember Fox Limited Edition

Size:

Size:

Get It Before It's Gone

ACOTAR™ x Knix

Get It Before It's Gone

This limited-edition ACOTAR™ x Knix collection brings the Courts, characters, and defining moments of A Court of Thorns and Roses™ to life through original silhouettes and exclusive prints across lingerie, sleepwear, and Knix’s signature leakproof underwear. Shop the Collection

Return Policies

Returns

Returns

Sale & Last Call

Items discounted 30% and below are eligible for size exchange or store credit. Items discounted above 30% and above are final sale – no refunds, store credits, or exchanges can be accommodated.

Free Returns

Knix covers the return shipping fees for exchanges and refunds initiated through our Return & Exchange Portal. Exchange orders initiated through our Return & Exchange portal are also eligible for free shipping within the USA and Canada. Please note, the shipping fees on your original order are non-refundable.

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

Part of the limited-edition ACOTAR™ x Knix Collection

Our best-selling overnight period protection in an exclusive ACOTAR™ print.

Inspired by the Autumn Court and Lucien’s fox mask, a flame-tailed fox moves through falling leaves in a display of fire and motion. Bold and energetic, this print reflects a court defined by heat, instinct, and transformation.

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.

ACOTAR™ is a trademark of Fireheart Inc. ©2015-2026, Sarah J. Maas.

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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
ACOTAR™ x KNIX

Choose your Court. Choose your fantasy.

Explore the limited-edition collection of intimates, sleepwear, and apparel inspired by the characters who rule the realm.

The Night Court

Starry skies. Unforgettable Nights. Made for deep bonds and a little...spice.
Shop the Collection

4.6
Rated 4.6 out of 5 stars
Based on 585 reviews
89%would recommend these products
FitRated 0.1 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
585 reviews
  • Rated 5 out of 5 stars
    4 minutes ago
    By the goddess these are comfy

    So comfy. I leak like crazy when I sleep and this worked well. No leakage and just super light feeling but hugs enough to feel secure and protected from

    Leaks. Plus this isn’t even and overnight pad with is what I normally sleep with.

    KC
    Kendra C.
    Verified Buyer
    Reviewing
    Super Leakproof® Dream Boxer™
  • Rated 5 out of 5 stars
    3 hours ago
    Love these

    These are so comfortable and cute. I’m not sure if like wearing them under clothing because they are a bit bulky. I got a size small and they are a bit big on me. They did not leak at all and were perfect for sleeping.

    TS
    Taryn S.
    Verified Buyer
    Reviewing
    Super Leakproof® Dream Boxer™
  • Rated 5 out of 5 stars
    5 hours ago
    5 Stars

    Love the fit, color, style & I feel safe at night that I won’t have any leaks.

    P
    Patricia
    Reviewing
    Super Leakproof® Dream Boxer™ Kit*
  • Rated 5 out of 5 stars
    8 hours ago
    Love these!

    My biggest issue is leaking in the morning when it’s that time of the month. These fit nice and did their job! I’m probably going to purchase a couple more! Size large

    HU
    Holly U.
    Verified Buyer
    Reviewing
    Super Leakproof® Dream Boxer™
  • Rated 2 out of 5 stars
    Yesterday
    Not for thick thighs

    I ordered my regular size and would expect sleep shorts to give some room, but these are TIGHT around my thighs. Super uncomfortable.

    CN
    Courtnay N.
    Verified Buyer
    Reviewing
    Super Leakproof® Dream Boxer™
  • Rated 5 out of 5 stars
    2 days ago
    Best purchase ever

    Fit fantastic love the color fast shipping good price

    IS
    Ilene S.
    Verified Buyer
    Reviewing
    Super Leakproof® Dream Boxer™
  • Rated 5 out of 5 stars
    4 days ago
    It was a gift and it was very well received

    It was a gift for my daughter and it was very appreciated

    MJ
    marie j. c.
    Verified Buyer
    Reviewing
    Super Leakproof® Dream Boxer™ Kit*
  • Rated 5 out of 5 stars
    5 days ago
    Great for teens

    My daughter loves these and they make her moon time more comfortable. Sizing is accurate 100lb 5”1’ fits a size S well.

    AZ
    Annie Z.
    Verified Buyer
    Reviewing
    Super Leakproof® Dream Boxer™
  • Rated 5 out of 5 stars
    5 days ago
    Excellent

    Excellent

    AK
    Alex K.
    Verified Buyer
    Reviewing
    Super Leakproof® Dream Boxer™
  • Rated 5 out of 5 stars
    6 days ago
    Easy choice

    The shorts themselves fit wonderfully and I love the coverage. More importantly I am blown away by how easy it was to navigate a replacement in the correct size. This was my first order from Knix and I’ve recently lost quite a bit of weight so picking a size was a challenge from a comfort standpoint. I would say it’s true to size but notably different from other brands is the waist band is not overly tight compared to the rest of the garment, I don’t feel pinched or uncomfortable even when bloated.

    AH
    Alison H.
    Verified Buyer
    Reviewing
    Super Leakproof® Dream Boxer™
  • Rated 5 out of 5 stars
    1 week ago
    Favorite boxers!

    These are so nice for heavy days on my period overnight! I feel comfortable only wearing this which I can’t say about even other Knix Boxers

    SC
    Sadie C.
    Verified Buyer
    Reviewing
    Super Leakproof® Dream Boxer™
  • Rated 5 out of 5 stars
    1 week ago
    So comfy!

    These are the most comfortable underwear, even more so than most of my regular pairs. It’s made me almost excited to have my period so I can be comfortable all day.

    EW
    Erin W.
    Verified Buyer
    Reviewing
    Super Leakproof® Dream Boxer™

Your ACOTAR™ x Knix questions, answered.