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| Warm Sand
Leakproof UltraThin No-Show High Rise
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New

Color: Warm Sand

Size:

Size:

Mix & Match: 3+ for $25 each
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Home / Boxer Underwear / Luxe Modal Leakproof Sleep Boxer

Luxe Modal Leakproof Sleep Boxer

$44.00 CAD

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Absorbs about 3 regular tampons

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Soft modal fabric blend

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Machine washable

| Black
| Black
| Black
| Black
| General

Absorbency: Moderate
Drop
Drop
Drop
Drop
Drop

Color: Black

Size:

True to Size

•

Size:

Size and Fit Guide

Leakproof Underwear is Sales Tax Free in Canada*
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.
Easy Exchanges within 30 Days

Returns

Returns
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.

Sale & Last Call

Items discounted below 30% are eligible for size exchange or store credit. Items discounted 30% and above are final sale – no refunds, store credits, or exchanges can be accommodated.
Rewards Members Earn 44 Points

"They're made with a cloud-soft modal fabric blend and shadow-sheer waistband detailing that allow for a restful, worry-free night of sleep."

- Woman's World

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Comfort-First Fit

Boxer short style with a high-rise fit and extra hip and bum coverage.

Moderate Absorbency

Quick-dry, odour-reducing liner absorbs about 3 regular tampons' worth of liquid.

Breezy Modal

The lightweight, naturally breathable modal fabric feels soft against the skin as you sleep with a non-digging shadow sheer waistband.

Easy to Wash

Machine washable just like regular underwear.

Zoom

| Black
| Black
| Black
| Black
| General

How to Choose?

Essential

Drop
Drop
Drop
Drop
Drop
  • • Everyday Wear
  • • No leakproof protection
  • tsp
    0 tsp

Heavy

Drop
Drop
Drop
Drop
Drop
  • • heavy period days
  • • overnight protection
  • • light bladder leaks
  • tsp
    6-11 tsp
  • pad
    about 1.5-3 regular pads
  • tampon
    about 3-6 super tampons
  • cup
    about 1-2 menstrual cups

Light

Drop
Drop
Drop
Drop
Drop
  • • light period days
  • • sweat
  • • sweat and discharge
  • tsp
    about 1-3 tsp
  • pad
    about 1-3 pantyliners
  • tampon
    about 1-3 regular tampons
  • cup
    about 0.5 menstrual cups

Moderate

Drop
Drop
Drop
Drop
Drop
  • • moderate period days
  • • light bladder leaks
  • • sweat
  • tsp
    about 3-6 tsp
  • pad
    about 1-1.5 regular pads
  • tampon
    about 2-3 super tampons
  • cup
    about 0.5-1 menstrual cups

Ultra

Drop
Drop
Drop
Drop
Drop
  • • extra heavy period days
  • • overnight protection
  • • light bladder leaks
  • tsp
    13-17 tsp
  • pad
    3.5-4.5 regular pads
  • tampon
    7-9 super tampons
  • cup
    2-3 menstrual cups
PATENTED LEAKPROOF TECHNOLOGY

Built-in protection that feels like nothing at all

Our original Fresh Fix Technology® features a built-in absorbent liner absorbing about 1 regular tampon worth of liquid so you feel fresh and in-control.

Soft Top Layer

Soft Top Layer

Gently wicks away moisture while keeping you feeling fresh and odor-free.

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4.3
Rated 4.3 out of 5 stars
Based on 130 reviews
Total 5 star reviews: 89 Total 4 star reviews: 14 Total 3 star reviews: 9 Total 2 star reviews: 11 Total 1 star reviews: 7
83%would recommend these products
ComfortRated 4.1 on a scale of 1 to 5
EffectivenessRated 4.4 on a scale of 1 to 5
FitRated 0.1 on a scale of minus 2 to 2
Ease of UseRated 4.3 on a scale of 1 to 5
Write a Review (Opens in a new window)
130 reviews
  • Rated 5 out of 5 stars
    1 week ago
    Favourites!

    I love these (please restock mediums!). I have other knix underwear and I like them but I find that the elastics dig in around the waist and thighs even when sizing up. These are sooooo comfortable and soft. I am typically a size small in pants but often go for a medium for underwear and bikini bottoms because they fit more comfortably. The medium is definitely a bit loose on me around the waist but I like them that way. These are the only thing I want to wear when I'm on my period and uncomfortable.

    Casidy
    Was this helpful?
  • Rated 5 out of 5 stars
    2 weeks ago
    Comfy and a worry free night!

    Just as the title says!

    Have asthma that makes me cough at night, I’ve borne three children and I’m over 65. ‘Nuff said!

    Janice L. B.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    3 weeks ago
    5 Stars

    Wonderful

    Eva
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    3 weeks ago
    Leakproof sleep boxer

    Would buy it again

    Edweene C.
    Verified Buyer
    Was this helpful?
  • Rated 2 out of 5 stars
    1 month ago
    2 Stars

    I love KNIX. All my underwears are KNIX. I also have dream shorts. But they did not meet the standard. I do not have long nails and when I was pulling my shorts up it teared through. Shorts are thin which is good for the heat but not good for out doors.

    Maiela
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 month ago
    Love my Knix

    They are soft and comfortable and work like the are suppose to . Iam looking foward to trying the new cotton ones.

    irene k.
    Verified Buyer
    Was this helpful?
  • Rated 3 out of 5 stars
    1 month ago
    Comfortable but not ideal for overnight coverage on heavy nights!

    Loved the fit and comfort of these but unfortunately I assumed they were absorbent enough for the first night of my period but they ended up leaking :( I would really appreciate if the products had their absorbency rating marked inside because I wasn’t able to get this information online under the product info page because it’s sold out.

    Amanda
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 month ago
    Very comfy

    Comfy and I love the feel of the fabric

    Christine C.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 month ago
    Comfyish

    Really nice idea, but don't fit like the other dream shorts, legs are too tight for me

    Marjorie R.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 month ago
    5 Stars

    Great product never an unpleasant surprise. Great return policy. Love Knix

    Katherine
    Verified Buyer
    Was this helpful?
  • Rated 2 out of 5 stars
    2 months ago
    Poor fit and very see-through!

    I really was hoping these were like the modal boxer briefs I purchased a few years ago. Unfortunately, they’ve extended the gusset so far up the back, they look terrible under clothes. Great for sleeping I guess, but not for wearing during the day.

    Maria E.
    Verified Buyer
    Was this helpful?
  • Rated 2 out of 5 stars
    2 months ago
    Love the shorts not the waist band

    Bought these for night time wear. Love how they fill and protection they give, zero worries about leaks. But after first time washing the waist band is super uncomfortable and very scratchy feeling. So disappointing as they protection great for sleeping but too uncomfortable now to wear.

    JJ
    Verified Buyer
    Was this helpful?