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Super Leakproof® Dream Boxer

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Home / Boyshort Underwear / Leakproof Cotton Boybrief
Best Seller

Leakproof Cotton Boybrief

$35.00 CAD

Mix, Match & Save: 3+ for $25 each
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Absorbs about 3 super tampons

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Cotton comfort

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More absorbency without bulk

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Machine washable

| Mushroom
| Mushroom
| Mushroom
| Mushroom
| General
| Mushroom
| General

Absorbency: Moderate
Drop
Drop
Drop
Drop
Drop

Color: Mushroom Limited Edition

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

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.
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Comfort-First Fit

A mid-rise boyshort with full coverage in the bum area.

Worry-Free Protection

An innovative floating gusset provides leak protection from every angle.

Moderate Absorbency

Absorbs about 3 super tampons worth of liquid—great for moderate flow days, light bladder leaks, and sweat.

Cozy Cotton-Blend

Soft cotton spandex feels luxurious against your skin.

OEKO-TEX® Certified

Certified according to OEKO-TEX® STANDARD 100, Product Class I : HK020 246396 TESTEX

Easy to Wash

Machine washable just like regular underwear.

Zoom

| Mushroom
| Mushroom
| Mushroom
| Mushroom
| General
| Mushroom
| 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
    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

Drop
Drop
Drop
Drop
Drop
  • • light period days
  • • sweat
  • • 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 4-8 tsp
  • pad
    about 1-1.5 regular pads
  • tampon
    about 2-4 super tampons
  • cup
    about 0.5-3 menstrual cups

Ultra

Drop
Drop
Drop
Drop
Drop
  • • extra heavy period days
  • • overnight protection
  • • light bladder leaks
  • 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
FRESH FIX TECHNOLOGY®

Built-in protection that feels like nothing at all.

Absorbs about 2-3 super tampons worth of liquid.

Soft Top Layer

Soft Top Layer

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

Our Best-Selling Underwear

Shop All Arrow Right

Super Leakproof® Dream Boxer

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Mix, Match & Save: 3+ for $25 each

Color: Black with White Polka Dot Limited Edition

Super Leakproof® Dream Short

$48.00 CAD

Color: Black with White Polka Dot Limited Edition

Leakproof UltraThin No-Show Bikini

$27.00 CAD
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Color: Shimmer Cherry Limited Edition

Leakproof UltraThin No-Show French Cut

$27.00 CAD
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Color: Blue Light Limited Edition

Light Leakproof No-Show Bikini

$25.00 CAD
Mix, Match & Save: 3+ for $20 each

Color: Warm Sand

Leakproof Cotton High Rise

$29.00 CAD
Mix, Match & Save: 3+ for $25 each

Color: Black

4.2
Rated 4.2 out of 5 stars
Based on 244 reviews
Total 5 star reviews: 159 Total 4 star reviews: 29 Total 3 star reviews: 27 Total 2 star reviews: 9 Total 1 star reviews: 20
77%would recommend these products
ComfortRated 4.3 on a scale of 1 to 5
EffectivenessRated 4.3 on a scale of 1 to 5
FitRated 0.1 on a scale of minus 2 to 2
Ease of UseRated 4.5 on a scale of 1 to 5
Write a Review (Opens in a new window)
244 reviews
  • Rated 5 out of 5 stars
    19 hours ago
    wonderful!

    I am beyond thrilled over these underwear. They are made well and are quite comfortable. I have sensitive skin and these are perfect. There are no rough edges to bother my skin. Im older and have incontinence issues and these are just what i wanted.

    Jennifer H.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    2 days ago
    Best cotton panties I’ve ever had

    I love how these panties feel. They are soft, comfortable, easy to care and washer and dryer. I have several pairs. It was a great purchase.

    Mary E. W.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    4 days ago
    Boybrief

    Excellent fit and very comfortable.

    Chandra C.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 week ago
    My favourite underwear

    Comfortable and practical. Excellent product.

    Roz S.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    2 weeks ago
    period leakproof underwear

    These underwear are comfortable to wear and help me during my period since I don't have to always wear bulky pads or tampons.

    Lindsey R.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    2 weeks ago
    Cotton Boybrief

    Very comfortable, breathable cotton. The sewn seams are sturdy and not binding. Overall, the best I've tried.

    KATHY H.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    3 weeks ago
    So comfy!

    My favorite go-to for period protection.

    Ariane D.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    3 weeks ago
    Perfect

    These are exactly what I was looking for!

    TD
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    3 weeks ago
    Leakproof Cotton Briefs

    Fit well. Retains moisture.

    Very sleek. 10/10

    Jean M. W.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    3 weeks ago
    Boybriefs

    Havnt worn them yet but they look very comfortable, well made and I know ill feel secure in them

    Lori C.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    4 weeks ago
    Great Leg Fit

    I love that the legs on the boy briefs never feel tight or dig in.

    Elizabeth K.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 month ago
    Oh so comfortable!

    I never need to worry about protection.

    Christa H.
    Verified Buyer
    Was this helpful?